Yes, but I think pbd456's point is that if they don't know dates when they first ticket then they make sure that all the dummy flights have stopovers at intermediate points unless they are 100% certain that it will be a transit. That way once they start the ticket and then need to adjust individual flights there is never a need to reissue the ticket even if what was originally ticketed as a stopover ends being a transit (they just forgo any tax refund, but save the reissue fee), and they hope that just rebooking a segment subsequently doesn't trigger married-segment lunacy.

That's certainly the way I always used to do it, but my experience is rather dated now (this whole "married segment" thing is a rather recent phenomenon)