I'm not certain they would agree to hanging or not? I think the death penalty would be reserved for a hard coup de' tat.... warring and lots of death involved and not for a soft coup.... which is STILL going on btw, only in slow motion.
With all the president's men....Nixon administration, they most all did jail time, for a year or two....
Granted, what they all did, was not sedition, or treason. Nixon flew free...pardoned before charges brought....supposedly to heal the country, so we could move on... and probably not to broadcast the corruption of our President to all other countries in the world???
Trump not accepting emails or texts or calls, without going through meadows, like any good mob boss, keeps the dirty works, from sticking to Teflon Don...he can claim he knew nothing....that's how it works with the mafioso, and his M/O his entire life from what I've seen...
But if, a big if, it ever came down to your exampled scenario, President Biden would commute the former President's punishment. Imo.