Anyone ever been able to book a stopover itinerary with the vacations package?

Their website let me request SFO-BKK r/t (which connects in HKG) combined with 2 nights of hotel in HKG, although the flight connections are very tight (like 2 hours, not the 2 days of hotel I'd booked! Interesting that it doesn't prevent that sort of thing).

Perhaps I can persuade it to allow 1 night stop-over (i.e., a "transit") but I seem to have no control over the flight options it presents, so I haven't been able to.

Any other stories about CX Vacations are welcome - this looks like a great deal.