I went through FRA and MUC last Sunday afternoon. All I can say is the lines (for me) were non-existent. My travel companion and I had just one person in line in front of us at passport control. I was greeted by bored passport control officers who were dumbfounded that two Americans showed up to enter Germany. They used the time to thoroughly scrutinize our travel, as there was no obvious rush to deal with. This involved quizzing me on the purpose of my travel (essential business), looked over my digital registration, past stamps in my passport, looking very carefully over the documentation I brought with me (invitation letter from German company, German essential worker form, recent COVID test, proof of digital registration). This was the first time they ever demanded that I show them proof I had a return ticket.

Not at all like the experiences I had going there multiple times before, with long lines and hardly a glance (or a rare question) before they stamp your passport and send you off. This trip was also the first time I was corralled by customs in Munich. I don't know what set him off, but he probably saw the baggage tags as we went by and decided to take a closer look.

Again I was peppered with questions, mostly to determine why I was there before it went to the normal "any meats or vegetables?" He checked our stamps and sent us on our way fairly quickly.

So aside from a closer look by the authorities, it's a pretty quick process.