The delay before you can get out of tahm kench should be much shorter

once tahm kench eats you you can exit by yourself if you think that he carries you somewhere where you dont want to be (like the middle of enemy team) but you need to wait around 2 seconds before that which is more than enough for a tahm to spit you on enemy's doorstep

i think that the delay before you can get out by yourself should be 1 second tops (enough to notice that you are eaten and prevent unintentional jumping out ... and too little for tahm to carry you miles againtst your will)