Yudhistra asked 6 questions to Beeshma. But for all these questions Krishna had already answered Arjuna during his Bagavad Gita discourse.
For example, for the question “Kimekam Deivatham” Krishna had already told “Vasudeva idhi sarvam”. For “Ko dharma sarva dharmanam” he has told “Sarva dharman paridyeja MAMEKAM saranam vraja”. Similarly for other questions also.
Does that mean Arjuna would not have discussed with his brother on the dialogue between him and Krishna?