I'm curious about this as well.I get that, I’m asking if the Senate can continue with this process after Biden takes over (i.e. they still follow through and prevent Trump from running again).
I did a little reading and it looks like it’ll need to go to court for a decision on that.
As the house would need to vote, then pass the article to the senate. The senate would then need to run a trial and then vote. Considering the speaker took over a month to pass the lass article to the senate, and current rules (to my knowledge) require all senators to be present... the previous impeachment pulled running candidates off their campaign trails. This time senators are away for covid.
Therefore I do not see this process finishing before the 20th, and I've never hear of a none sitting president being impeached.