When a cue with discrete timing on channels is automarked, the total time of that cue is at least as long as the longest time of that discrete time.
E.g.
Cue 3 has a cuetime of 3 seconds but has two channels that have a discrete timing of 60 seconds
Cue 2 has a time of 30 seconds and marks these two channels for the next cue. Now the total fade time of cue 2 is 60 seconds, although nothing appears to be happening after the first 30 seconds.