I have a flight with a short transfer time (45 min) in AMS coming up - both flights on KLM, one booking. As the trip is UK to Germany, I figured I will have to go through passport control in Amsterdam. KLM's "Easy transfer video" (found on this site) mentions a "short connection lane" that can be used if the flight is listed on the information monitor above that lane (at 1:43min).
My question is: Does anyone know how long before the scheduled departure time a flight will appear on said screen? I'm asking because being a German citizen, in my experience the actual inspection time is negligible compared to the waiting time and there might be some point in time when waiting a bit for the flight to appear on the short connection list is faster than immediately queuing at the regular lane.