I remember hearing a story told by R' Hershel Schachter about the Mir Yeshiva's journey to Shanghai, that took place on the train ride from Eastern Europe to Shanghai.
The gist of the story is that it's presented from the perspective of a third party onlooker. Said person recounts:
I would see these boys and they seemed to be such great friends-- hanging out and helping one another, but then all of a sudden they would take out these huge books [gemaras] and would start shouting at each other “What are you talking about! That's not what that means! How does that make sense!” and this would go on for a little until they put the books away.
Then they would laugh with one another and resume being great friends.
Not 100% sure, but I think the context of this sweet story was to highlight the unique aspect of learning Torah with a chavrusa.
Has anyone else heard this story that R' Schachter referenced and where it might be found?