diff --git a/discord/ext/commands/bot.py b/discord/ext/commands/bot.py
index 2bda7313..72ece175 100644
--- a/discord/ext/commands/bot.py
+++ b/discord/ext/commands/bot.py
@@ -36,16 +36,17 @@ import sys
 import traceback
 import types
 from collections import defaultdict
-from typing import Any, Callable, Iterable, cast, Mapping, List, Dict, TYPE_CHECKING, Optional, TypeVar, Type, Union
+from typing import Any, Callable, Iterable, Tuple, cast, Mapping, List, Dict, TYPE_CHECKING, Optional, TypeVar, Type, Union
 
 import discord
 from discord.types.interactions import (
     ApplicationCommandInteractionData,
+    ApplicationCommandInteractionDataOption,
     EditApplicationCommand,
     _ApplicationCommandInteractionDataOptionString
 )
 
-from .core import GroupMixin
+from .core import Command, GroupMixin
 from .converter import Greedy
 from .view import StringView, supported_quotes
 from .context import Context
@@ -136,6 +137,18 @@ def when_mentioned_or(*prefixes: str) -> Callable[[Union[Bot, AutoShardedBot], M
 def _is_submodule(parent: str, child: str) -> bool:
     return parent == child or child.startswith(parent + ".")
 
+def _unwrap_slash_groups(data: ApplicationCommandInteractionData) -> Tuple[str, List[ApplicationCommandInteractionDataOption]]:
+    command_name = data['name']
+    command_options = data.get('options') or []
+    while any(o["type"] in {1, 2} for o in command_options): # type: ignore
+        for option in command_options: # type: ignore
+            if option['type'] in {1, 2}: # type: ignore
+                command_name += f' {option["name"]}' # type: ignore
+                command_options = option.get('options') or []
+
+    return command_name, command_options
+
+
 class _DefaultRepr:
     def __repr__(self):
         return '<default-help-command>'
@@ -1110,21 +1123,22 @@ class BotBase(GroupMixin):
         ctx = await self.get_context(message)
         await self.invoke(ctx)
 
-    async def on_message(self, message):
-        if self.message_commands:
-            await self.process_commands(message)
 
-    async def on_interaction(self, interaction: discord.Interaction):
-        if not self.slash_commands or interaction.type != discord.InteractionType.application_command:
-            return
-
-        assert interaction.user is not None
+    async def process_slash_commands(self, interaction: discord.Interaction):
         interaction.data = cast(ApplicationCommandInteractionData, interaction.data)
+        command_name, command_options = _unwrap_slash_groups(interaction.data)
+
+        command = self.get_command(command_name)
+        if command is None:
+            raise errors.CommandNotFound(f'Command "{command_name}" is not found')
+        elif not command.slash_command:
+            return
 
         # Ensure the interaction channel is usable
         channel = interaction.channel
         if channel is None or isinstance(channel, discord.PartialMessageable):
             if interaction.guild is None:
+                assert interaction.user is not None
                 channel = await interaction.user.create_dm()
             elif interaction.channel_id is not None:
                 channel = await interaction.guild.fetch_channel(interaction.channel_id)
@@ -1134,19 +1148,6 @@ class BotBase(GroupMixin):
             interaction.channel = channel # type: ignore
         del channel
 
-        # Fetch out subcommands from the options
-        command_name = interaction.data['name']
-        command_options = interaction.data.get('options') or []
-        while any(o["type"] in {1, 2} for o in command_options):
-            for option in command_options:
-                if option['type'] in {1, 2}:
-                    command_name += f' {option["name"]}'
-                    command_options = option.get('options') or []
-
-        command = self.get_command(command_name)
-        if command is None:
-            raise errors.CommandNotFound(f'Command "{command_name}" is not found')
-
         # Fetch a valid prefix, so process_commands can function
         message = _FakeSlashMessage.from_interaction(interaction)
         prefix = await self.get_prefix(message)
@@ -1157,7 +1158,6 @@ class BotBase(GroupMixin):
         message.content = f'{prefix}{command_name} '
         for name, param in command.clean_params.items():
             option = next((o for o in command_options if o['name'] == name), None) # type: ignore
-
             if option is None:
                 if param.default is param.empty and not command._is_typing_optional(param.annotation):
                     raise errors.MissingRequiredArgument(param)
@@ -1178,7 +1178,7 @@ class BotBase(GroupMixin):
                 quoted = False
                 string = option['value']
                 for open, close in supported_quotes.items():
-                    if not (open in string or close in string):
+                    if open not in string and close not in string:
                         message.content += f"{open}{string}{close} "
                         quoted = True
                         break
@@ -1195,6 +1195,15 @@ class BotBase(GroupMixin):
         await self.invoke(ctx)
 
 
+    async def on_message(self, message):
+        if self.message_commands:
+            await self.process_commands(message)
+
+    async def on_interaction(self, interaction: discord.Interaction):
+        if self.slash_commands and interaction.type == discord.InteractionType.application_command:
+            await self.process_slash_commands(interaction)
+
+
 class Bot(BotBase, discord.Client):
     """Represents a discord bot.