huh....I had always thought it was a universal rule that a Priest or Deacon must give the Homily.
Only break from that I’d ever seen was a priest with a very bad back who was obviously in some pain who had asked a nun to deliver it for him. Immediately a number of people ran to me, a lowly usher, to complain this was against the rules.
Personally I came down on the side of compassion for the suffering on that one. But I can see how as a regular rule you don’t want just anybody giving Homilies.
It is! Rochester diocese ends illicit practice of allowing lay people to preach homilies