This would have the advantage that you could see at a glance how much delay time there is between two actions.

as soon as delay time is adjusted, the at least between two entries is displayed. Then you know exactly where you are without having to tap on the little icons on the left.

Just an idea.

The does have the benefit that you can re-order (!) and copy/paste the delay time between actions. That would allow a way faster workflow and face everything at first sight.