Did Paul believe Jesus to be an angel?

“And even though my illness was a trial to you, you did not treat me with contempt or scorn. Instead, you welcomed me as if I were an angel of God, as if I were Christ Jesus himself.” (Galatians 4:14)

Scholars like Bart Ehrman argue that the original Greek of the text implies that Paul identifies Jesus as an angel of God. So the accurate translation would be “as an angel of God, such as Jesus Christ himself”. What do you think of this interpretation? Did Paul really believe that Jesus was an angel, or more likely the Chiefangel?