Absolutely yes, it works in multiplayer. Assolutamente si, funziona in multiplayer.
For infos watch https://www.sas1946.com/main/ site not here.
IL 2 1946 was heavy modded by that community and is actually the best sim ever done, except for the grapchics, because it was planned in 2001.
Actually Great Battles is a graphics sim only, with boring maps, ridicolous damage model and low visibility.
When 1c married with 777 they chose the wrong way and this is the result.
I hope they go back and work on Cliffs od Dover sim, that is for me, the best son of 1946!