The way you are putting it Best Buy could not advertise a SONY tv in their weekend fliers. If they were to change their name to Sony Buys, trademark infringement. Advertising a Sony tv for sale noting that Sony holds the trademark is legal even if Sony does not want them to.
If they lack an agreement yes. But Best Buy has a retail agreement with Sony which grants them the right to use Sony’s logo. And vice versa as you will sometimes see product commercials that mention where to buy. No noting trademark when you are violating it does NOTHING. Without some agreement it’s not your trademark to use, PERIOD.