I was wondering what this rule means in the no intro Ng+ category on console.

"If streaming with a Capture Card, please locally record, in case your stream messes up"

I can only record my gameplay on the twitch App on my Xbox. I don't understand what "locally record in case the stream messes up" means

Also if I submit a run anyway, without "locally recording" and the footage isn't "messed up" is the run still valid???