@The-Captain I don’t play with many others (mostly myself), but in the few times I have it has taken somewhere in the range of 25 hours to complete a game of OOB Global 1940.
It would probably be wise to mention however, that I play with one relatively inexperienced player and another hyper-control freak who take upwards of 30 minutes to complete his moves. We once played for 5 hours and hadn’t even finished the second round of play…
I have a long attention span, but - my gosh.
Sad to say I haven’t played any modified games with other, mostly myself. I hope this is at least a little helpful and I’m not just talking to talk. I appreciate your work with house rules - very good stuff.