Have you ever experienced this in game (read please can't word it in the title)

Right so there's 2 of you, and the enemy is probably 50% HP and you could both kill him, but because you're chasing him and he knows he is about to die he keeps running and then you're thinking fuck it I can't catch up to him or for whatever reason or thinking you might get baited, then your team mate or jungler keeps chasing him, then the enemy obviously sees that you have stopped and they end up 1 v1'ing in and killing him then he blames you saying "wtf no help" like obviously if i kept chasing him with you he would of kept on running so how did you expect help?