Gregory the Great — as excerpted in the Catena Aurea on Mark 16:14-18

“(ubi sup.) We should observe that Luke says in the Acts, As he2 was eating with them he commanded that they should not depart from Jerusalem, and shortly afterwards, while they beheld he was taken up. For He ate, and then ascended, that by the act of eating, the truth of the flesh might be declared; wherefore it is also here said, that he appeared to them for the last time as they sat at meat.”