Bot doesn't see the server responses to its slash commands?

Just to wrap this up if anyone stumbles on this thread in the future trying to get /vips and /mods from chat, here’s what I ended up with to process the output.

Here line is the string that came back from streamReader.ReadLineAsync. There are two List<string> objects: vips and mods that get populated with the data from the NOTICEs.

                string[] split = line.Split(' ');
                //PING :tmi.twitch.tv
                //Respond with PONG :tmi.twitch.tv
                if (line.StartsWith("PING"))
                {
                    await TryWriteLineAsync($"PONG {split[1]}");
                }
                else if (split.Length > 2 && split[1] == "NOTICE")
                {
                    //:tmi.twitch.tv NOTICE #robertsmania :The moderators of this channel are: mod1, mod2, mod3, ... modX 
                    //:tmi.twitch.tv NOTICE #robertsmania :The VIPs of this channel are: vip1, vip2, vip3, .. vipX.
                    //                       ^^^^^^^^
                    //Grab the channel name here
                    int secondColonPosition = line.IndexOf(':', 1);//the 1 here is what skips the first character
                    string message = line.Substring(secondColonPosition + 1);//Everything past the second colon
                    string channel = split[2].TrimStart('#');

                    if (message.StartsWith("The VIPs of this channel are:"))
                    {
                        int thirdColonPosition = line.IndexOf(':', secondColonPosition + 1); 
                        string vipStr = line.Substring(thirdColonPosition + 2); //2 skips the space after the colon, should be list of VIPs
                        vipStr = vipStr.TrimEnd('.'); //VIPs do apper to have a period?
                        vips = vipStr.Split(new string[] {", "}, StringSplitOptions.None).ToList();
                    }
                    else if (message.StartsWith("The moderators of this channel are:"))
                    {
                        int thirdColonPosition = line.IndexOf(':', secondColonPosition + 1); 
                        string modsStr = line.Substring(thirdColonPosition + 2); //2 skips the space afte rthe colon, should be list of mods
                        modsStr = modsStr.TrimEnd('.'); //mods doesnt look like it has a period?
                        mods = modsStr.Split(new string[] {", "}, StringSplitOptions.None).ToList();
                    }
                } ...

And then goes on to process other types of messages.