My guess would be that some of the constant chasing might slow, but in the end you have two similar fish (usually causes problems) in a tank that you already admit is too small (almost always causes problems) and they are semi-aggressive. Even if they somehow settle into a territory, they are going to cruise around and they will get chased by the other when they cross into the others territory. IMO
, its gonna end bad for at least one of them. If not by injury, by stress. You aren't in any kind of control to "make it work" except by making the choice to rehome one of them (which you said you would not do) or get a bigger tank.
Also, just saw the other post that says this tank is only about six weeks old and you already have two angels, a clown, etc. Angels do better in established tanks, so that would worry me. It's also a large bio load to have added that quickly, IMO
. Hopefully you are monitoring your parameters closely.