When did the two disciples from Emmaus recognize Jesus?

Answer: When he broke the bread

At the table He took bread, blessed and broke it; their eyes were opened and they recognized Him in the breaking of the bread.

“While He was reclining at the table with them, He took bread, spoke a blessing and broke it, and gave it to them. Then their eyes were opened and they recognized Jesus—and He disappeared from their sight. Then the two told what had happened on the road, and how they had recognized Jesus in the breaking of the bread.”— Luke 24:30-31, 24:35 (BSB)