I'd be very curious too. My son's university is proposing to do the next year (mostly) remote, which sounds like a perfect way for me to go back for a couple of classes too. I always wanted more letters after my name.
This is a really bad reason to do a degree, if you want my unsolicited opinion.
Never seen that one before!
Walter H. Schottky's grave in Pretzfeld says "Prof. Dr. Dr. e.h. Dr. e.c. Dr. e.h. Walter Schottky"