Ohh, as in "hitting a milestone moment in the series"?
I cannot relate to that with my comic, because it's made of one-strip stories and scenes. However, I can see where you're coming from. Time might be tricky to deal with when you're trying to build an atmosphere towards a climax (if I understand the comment correctly). Delays may harm the power of the climax you intend to build, indeed.
It makes me think, perhaps that's why TV series sometimes add a "Previously on blah blah blah show". They want to keep the upcoming climax up and going.