Raycast - Trigger something when looking at an object

Yea well… the main idea was to show the user that an object is interactible when he looks at an object for X seconds. Like after X seconds display some text.
But dunno now. Everything is way to messy in my head on how to do some stuff… and other stuff start piling up.

Like I created a sequencer animation that was animating my door (BP door). I duplicated the door with the idea of that new door using the same logic, but it turns out that the Sequencer animation is “hardcoted” to my first door. So when I interact with the 2nd Door, my 1st Door opens. Now I need to find a way on how to do this the “proper way”.

So in a way I would still like to learn on how to do that proper “Every Tick” raycast… and me knowing when I look and stop looking at that object.