Q: I have seen Priests and Deacons serving as an MC; wearing a cassock and surplice then during the Eucharist prayer they put on a stole over. Is this correct?
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A: I’ve seen some add a stole for the communion rite, rather than the eucharistic prayer. Either way, I’ve never seen any directives calling for this. It seems to me that either the MC is to act entirely as an MC without additional vesture, or a vested concelebrant or deacon assists as needed when there is no other MC, but that the roles are not conflated.