https://www.ajc.com/blog/music/butch-walker-producing-new-records-watching-the-office-during-coronavirus-time/91uQeEBk7WEVHNykpuefZP/
"I wish I could say it’s downtime! I’m actually still working. I do a lot of records by myself, and I’m finishing up (producing) three records, so it’s taking most of my time – a Wallflowers record, the new Jewel and Matt Nathanson. And I’m getting ready to start another Green Day record (Walker co-produced the band’s current “Father of All…”). I’m working in isolation, which is cathartic, anyway."
I think that this is what he is referring too and thank god it never happened haha.