Just wanted to thank whoever recommended booking airline tickets at the 330 day mark from the return trip (which is actually the first day you can book) == I know the topic was about Business Class seats, but we can't afford that - we usually fly coach and pay about $1300-1500 each on MultiCity flights. We booked on our opening window day, at 330 days out for our return for our Tauck Oberammergau Ultimate Alps & Dolomites for September 2022 and we were able to get Delta Comfort+ seats (bigger than coach) for $1200 !! We are very happy. Tauck's price was quite a bit higher, so we did book on our own.
Thanks to everyone who posted about this --- TerriLynn.