Last time I sent the wrong I was thinking of USER I got dc’ed so that behaviour seems to have changed. shrugs
But it’s been a looooong time since I tried sending mismatched data.NICK
I advised removing USER since the docs don’t mention sending it and wanted to rule it out for OP
Twitch doesn’t follow the RFC. TMI is a bunch of go scripts wearing a trench coat pretending to be IRC and speaking French.