A little hard to parse your question. Definitely ok for fireplace to be wider than the TV -- that is preferable to the reverse. Can't picture this pairing above a dresser, however. Maybe what you want is a freestanding fireplace?

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Thank you. Yes, I'm having a hard time picturing it too, but husband is convinced. It would be TV over a wall inserted linear fireplace which both are then over a wider (9 drawer) dresser.

Fireplace should be longer than tv to look good. Having a dresser, then fireplace, then tv sounds awful though…is that what you are suggesting?

Youshould draw it to scale so you can see what it would look like to have fireplace above a dresser and a tv above the fireplace. it does notsound like a good look.

Putting the fireplace above the dresser will make it pretty high, and the tv will be higher still, probably too high to watch comfortably.