For power delivery, ie requesting power outside the typical 5v 3a max; yes.

The charger sorting them together usually indicates to the device, it’s fixed at 5v 3a.

I think the device shorting them will indicate to the charger/port that you’re only requesting power @ 5v 3a max; but I haven’t died into the spec.

I’d give that a try and dig further if it doesn’t work.