I tried to turn off an Input event as soon as it is fired and was surprised…
I can’t Toggle an event.
Plus I can’t exit a gate straight into its own close input.
I tried Sequence Then 0 Then 1 and that does the trick… hope that helps someone.
Is this the correct way to do ‘virtually’ parallel outputs from one event to several functions like in UE3?
One problem we often had with complex scripts in Kismet was that there was no defined order in which outputs were wired. We literally fixed some bugs in Gears by breaking connections and making them in a different order. This keeps me awake at night 
So in Blueprints we wanted to try and avoid some of this ambiguity so it was always clear what order things will happen in. That is why we added the Sequence node.
In your case, could you use a DoOnce node instead? That is an example of a ‘macro’, and you can create your own macro nodes for whatever utilities like this you come up with.
Oh… cool. Thanks James. Now I will try to learn how to make a macro.