Did the beloved disciple eat at the last supper?

tam wrote: Christ ate the last meal with the twelve apostles, and the disciple Christ loved (Lazarus) was one of them.

It’s not clear the disciple Christ loved ate during the last supper. He only enters the scene after the supper is completed.

Jhn 13:1 Now before the feast of the passover, when Jesus knew that his hour was come that he should depart out of this world unto the Father, having loved his own which were in the world, he loved them unto the end. 2 And supper being ended, the devil having now put into the heart of Judas Iscariot, Simon’s [son], to betray him; 3 Jesus knowing that the Father had given all things into his hands, and that he was come from God, and went to God; 4 He riseth from supper, and laid aside his garments; and took a towel, and girded himself. … 23 Now there was leaning on Jesus’ bosom one of his disciples, whom Jesus loved.

The disciple was leaning on Jesus’ bosom after the supper had ended, not during. The fourth gospel never talks about what happened while the supper was occuring, so most likely the author did not participate in the actual supper.