I don't think there will be prison time at any point. House arrest at Trump Tower? As TRL has pointed out, Secret Service can't be sent to prison, but they can't be separated from Trump, hence the Dems trying to get the Disgrace Act bill passed. Unless a lot of RINO's want to give up their seat come re-election time, that will never pass, so they can't imprison Trump.
I don't think they expect him to go to jail. They expect this entire process to take forever and not let him in the White House. They also expected people to believe this bullshit polls spread by NYT and others that no one would vote for a person found guilty of felonies, but their hail mary backfired horrendously.