I saw two trains go out of the station at the same time today, but from my vantage point in line I was unable to see what happened on the lift to separate the two.
Even when trains are dispatched at the same time, one will creep up the lift while the other passes it.
I think some people may be under the impression that because the trains are out on the track at the same time, they are dueling. That's not dueling. Dueling is when they drop off the lift at the same time and go through the near miss elements at the same time. And it doesn't happen anymore.