You know... I actually looked up the scene which I should've done before.
From CE:
ishampayana said, ‘Hearing the words of their eldest brother, all of Pandu’s sons, of infinite
energy, were pleased and began to think about the purport of those words. Suspecting them
to be the foremost of the Kurus, the chief of the Vrishnis43 and Rohini’s son
44 then came to
the potter’s house, where those foremost among men were living. Krishna and Rohini’s son
saw Ajatashatru,45 with long and thick arms, seated there. In a circle around him sat the
others, like blazing fires. Vasudeva went to Kunti’s son, foremost among those who follow
dharma. He touched with his hands the feet of King Ajamidha46 Yudhishthira and said, “I am
Krishna.” Rohini’s son went to Yudhishthira and did the same. Seeing them, the descendants
of Kuru were greatly delighted. O chief of the Bharata lineage! The chiefs of the Yadu lineage
then touched the feet of their father’s sister.47
‘Seeing Krishna, Ajatashatru, chief among the Kurus, asked him about his welfare and said,
“O Vasudeva! When we are living here in disguise, how did you manage to track us down?”
Vasudeva smiled and replied, “O king! Even when fire is covered, it comes out. Who but the
Pandavas can display such valour among men? O destroyers of enemies! It was through good
fortune that you escaped from that fire. It was through good fortune that Dhritarashtra’s evil
son and his advisers did not succeed in their desires. Be blessed. Prosper, the way a fire
hidden in a cave gradually expands and spreads. Permit us to return to camp. Otherwise, the
kings may discover you.” Then, taking permission from the Pandavas, the eternally radiant
one quickly went away, accompanied by Baladeva.
------
Krishna introduced himself to YUDHISHTIRA.
Yudhishtira doesn't ask, "How did you recognize us?"
He asked, "How did you track us down?"
Krishna's response makes it clear Pandavas didn't know Krishna believed they might be alive.
Ie, they didn't meet after lac house.
If Pandavas knew Krishna before, would they be wandering and deciding on death? When Arjuna was supposed to be such good friends?
Edited by HearMeRoar - 5 years ago