Oh, that’s good to know. I didn’t see that documented, so wasn’t sure. Edit: I see some of the examples in Twitch IRC Tags | Twitch Developers does show it.
Fair enough, for raiders. I was thinking the tag could simply ignore the duration altogether (taking away the complexity of figuring out how long to show the tag), but understood. First chatter/returning chatter is enough for now.
Thank you for the response!