I play with three friends, all of whom take quite a bit longer than me to take their turns, regardless of who is using which nation.
Gives me time for a smoke break, but it can get annoying.
Still, we do discuss strategy quite a bit, especially the Allies.
I'm in a crazy game right now...Japan huge in India, and also making small scale landings in Alaska/Canada... America alternating transport loads between Norway and Algeria...Britain with constant flow of men into Archangel...Russians holding the Japanese at bay in China...Germany bottled up, but too strong to take out effectively.
It's quite possibly our longest game so far...and it's interesting having Brits, Yanks and Russkies all defending the Eastern Front.
If me and my partner could not strategize as the Allies, we would have long ago lost the game...so discussion is certainly important...it can lead to arguments, but in general someone learns something by seeing a new or different strategy from someone elses perspective, so it evens out.