Comments on videos question

All my channels typically are created with the channel options enabled such as comment on recordings etc.

I created a channel with these options turned off thinking if I upload something that viewers could comment still.

Even after enabling all the features I cannot comment still ?
The initial video is an upload and NO recordings have yet been made.
Is this expected and / or is it required to actually record something first instead of uploading in order for that feature to be activated or something ?
Or will some type of service or server restart activate comments for this channel. ?
Thanks