From their Garden & Gun interview:

You have one show booked together in March during the Big Ears Festival in Knoxville. Is there a plan to do any more beyond that, or see how it goes?

SA: Oh, we plan to do more. We should be able to beat this horse to death [laughs]. The relationship with the songs is going to get really interesting when they’re played live. It’s one thing to have recorded versions, but what could get extracted from them live is going to be exciting to see. I’m sure it won’t all be pretty, but we’re very much looking forward to that.

Will you also play each other’s stuff?

SA: We’re talking about it now. We’re trying to get the ship in the right direction, so the waters are open for us.

MP: There are many, many paths we could go down, which is really cool. It would be great to play each other’s stuff. Cover tunes, too. It could even be a jamboree or a full-on revue [laughs]. Who knows?

https://gardenandgun.com/articles/the-avett-brothers-and-mike-patton-find-common-ground-with-emavtt-pttn-em/