Reply #7: True. But, realistically, Congress is not going to

[NYC Liberal]

deny a president's request to speak anyway, though they may try to assert themselves by dickering over scheduling.

It's one of those Constitutional technicalities that theoretically could be an issue, but probably never will -- just like how the 25th Amendment requires a president's disability to be confirmed by the Vice President but has no provisions if a president becomes disabled after the VP has died or resigned without having been replaced yet.