KiCad doesn’t support net ties any more than it supports via stitching, but you can force it to.
It’s quite simple to do: make a footprint with two pads, far enough apart not to cause clearance issues, and then draw a graphic line between them to link them. DRC ignores the line, so there’s no clearance violation. It’s a good way to link together nets that you want connected in a controlled manner.
For anyone who wants to see them in practice:
Apologies for the potato microphone, I’ll try to improve the sound quality next time - but it’s better than the last, which had no audio at all!
My footprints and symbol: