The Torah mentions that Yosef recognized his brothers but they didn't recognize him (Bereshit 42:7-8). Was wondering whether any commentaries deal with the question of when Benjamin came down did he or did he not recognize Yosef right away and whether he kept it secret? Potentially 2 reasons
- Benjamin believed in Yosef he named his 10 sons after Yosef. His brothers doubted Yosef's fate they from Rashi at least really believed that Yosef was in prison somewhere. They were really shocked when Yosef revealed themselves to him and particularly as viceroy of Egypt.
- Second Joseph's dreams, which his brothers dismissed but their father took seriously, could have further contributed to Benjamin's faith in him.