I believe the way it works is whoever, state or federal gets Trump first, keeps him, so if NY gets him first he does his time in a NY state prison. There is no pardon possible there, unlike a federal prison and it will be much easier to go after Donald and pile on indictments if he's muzzled doing time in a NY maximum security cell. Once Donald goes down in NY in 2022 the dominos should fall in the federal cases, as everybody runs for the exits squealing for a deal with guilty pleas.
That's how I see the Happy New Year playing out, Garland or an independent special counsel will pile on when Donald goes down and his henchmen and minions are panicking. Jan 6th should bust wide open in 2022 after the congress issues it's report and recommendations with guilty pleas, limited immunity and squeal deals. Having NY put Trump away would be for the best and should give Joe "clean hands". It is gonna be a though battle to keep the house and win more in the senate the democrats need every advantage they can get and I expect all the stops to be pulled out to prevent the GOP from gaining in the house or senate.
Donald could end up forming the MAGA party (Free Donald) and walk his supporters out of the GOP because the congress people and senators wouldn't storm the courthouse in NY when they put him away. When Donald goes down he will be blaming and striking out in all directions and I expect he will hammer the republicans on the way down. He will need more money too and can't have his supporters sending the GOP money, he's already getting most of the small donor money now.
I wonder though, if he's only facing state charges, if he might make a run for it, perhaps Vlad would take him in for PR?
Think about it, Donald will have his own RT show on the internet and a 5th column in America at his command. Donald will be like a ventriloquist dummy with Vlad's arm up his ass working his mouth spewing disinformation and chaos.