Presenting a derashah when the Torah is out of the Aron

Hi,

The Rabbi should not present a dvar torah [sermon] when the Torah scroll is out of the aron kodesh [ark]. Doing so would distract people's attention from the Torah scroll, and this would be disrespectful.

(Rivivot Ephraim 1:209:1, and see Igrot Moshe Orach Chaim 4:40:21 as well)

Have a great day,
Mordechai