I agree that a formal alliance between the two would be unlikely at the time, but the two would likely find shared interests. The liklely bridging point between the two parties would likely be their common conflict with the Teutonic Order...since I know that few Catholic countries were sad to see them fall.
Once the Novgorodians have united Kiev, Novgorod, Muscovy, Estonia, Livonia, and Latvia, do you guys think there could be any more substantial expansion for TL purposes? Into Scandanavia perhaps, or establishing trade colonies?
As you can probably tell, I am not particularly learned in the medieval/renaissance landscape of Eastern Europe, so any further help would be much appreciated.
Eventually this will mutate into a timeline, so I'd like you to include any helpful details that you can,
Thanks for the great discussion!