I would love to know your streaming setup for this. I did an interactive project using Twitch/YouTube chat a month back, controlmylights.net, and I found the delay on both of services was pretty bad. And you can't use Twitch's low latency mode on Safari/Edge. Also, unless you can monetize on YouTube you can't embed a live YouTube stream.
If you are interested in how I made it: [link redacted]
If you are interested in how I made it: [link redacted]