In my understanding, yes, definitely similar. And all triggers are not equal, we feel them in varying degrees depending on our abuses. Maybe for an alcoholic a trigger spurs a dramatic or obvious reaction that results in them relapsing & drinking but it's not always so black & white for us Codies.
For me all of my reactions are pretty subtle, but still damaging to me. Maybe I feel insecure because my A is out super late & no longer answering my texts or calls which triggers my feelings of abandonment left unresolved from my childhood with an AF... so I respond by eating my weight in chocolate & Doritos.
I can control what I eat even when I can't control his behavior, you see? Illogical? Yes, definitely!
Your example to me is a mild reaction to a trigger, but a reaction nonetheless when you change that channel or leave the room. Without the trigger you wouldn't hit this snag - you would just continue watching the movie, you wouldn't become personally affected.
It's not always violence that creates triggers - verbal abuse, emotional manipulations, abandonment, etc. all provide wonderful breeding ground for future triggers.
In a way triggers show us how far we've come to be healthier as a result of our recoveries - if we were still living in that frame of mind mentally we wouldn't "trigger" it would be part of our day-in-day-out lives, right?
Sometimes triggers show us the distance between where we were & how far we've come. JMHO