In a similar vein, I just heard Ben Mulroney use a clip featuring Vassy Kapelos asking Alberta Premier Danielle Smith a question. He didn't ID the interviewer (Vassy) or the source (possibly CTV's Question Period or her News Channel show.)
Since she's on CFRB at noon, right after his show ends on AM640, I wonder how wise that is. At the very least, you're required to give credit to the originating source. At the very most, don't help promote your competition.