Can the Bishop make an exception to the Redemptionis Sacramentum?

Yesterday our parish invited a lay missionary up to speak instead of a homily right after the Gospel. It appears to me to be a violation of #74 in the Redemptionis Sacramentum.
This is the response I received from our pastor.


At a normal parish they would speak after Mass, but since we have a bare half hour between Masses we have permission to allow them to speak in place of a homily. Bishops can allow this under unusual circumstances.

Does the Bishop actually have the authority to make this exception?

The following links should help answer your question about who can give a homily. If you have any further questions, please contact Catholic Answers directly.

Recommended Reading:

Who can preach a homily?
Is it wrong for a layperson to give the homily?
When should a layperson speak at Mass?
What is the difference between a homily and a talk?

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