It happened to my big meetings (for >100 meeting participants) that the meeting recording will not be automatically generated in the meeting chat. It will send an email with a link to the user who initiate the meeting recording instead. May I know if it is the expected behavior and for what kind of the scenarios that it won't generate the meeting recording post directly in channel or chat?
@Veeko Hello, what subscription do you use? I suppose you haven't opted in for the new storage location as the scenario you're describing sounds like "classic Stream".
"The person who started the recording receives an email from Microsoft Stream when the recording is available. It also shows up in the meeting chat—or in the channel conversation if you’re meeting in a channel."
If it didn't show up in the chat or channel perhaps there was an error involved. Either way your org. should opt in using OneDrive and SharePoint instead.
I'm attaching some info, please read and get back with any further questions.