Live chat basic question

Hi I know I’m off topic and that the question will seem stupid…
But I was watching todays live on a desktop and although I could see the live chat in the live chat part of youtube. I could not find a way to participate to the chat…

I tried to google it down… but could only find info on how to enable live chat at the streaming host…

You have to be signed in to YouTube in order to chat, but you can watch without being signed in. Is that it?

Hi i was signed in (but using a "brand "account) may be this is the issue.
I could watch the video and the comments but not write any

mm not that’s not it… I just went now to your “next live page” https://www.youtube.com/watch?v=TmRkGe-jvZk and now, I may write comments… this is weird…
never mind :confused: