Exactly 24 Hours. Is It a Stopover?
 

If you have flight that arrives at 7:55 PM on one day and another that
leaves at 7:55 PM the next day... is it considered 24 hours and thus a
layover?

It's a real YMMV on this. Some state one-way, some stay the other.

My one experience with such on a LONE4 had us scheduled to arrive on BA into LHR from ORD at 10am and departing for DBV from LGW at 10am the next day.

It was ticketed by AA as a transit (-ORD-xLON-DBV-).

Even with this AA can be non specific. e.g. http://www.aa.com/i18n/Tariffs/AA1.h...IRY_AA1-0135AA

Both statements suggest that exactly 24 hours is fine.

The first no (within 24 hours) - as it refers to periods shorter than 24 hours, not exactly 24 hours; the second, yes (later than 24 hours).

Since the second does not contradict the first then I guess 24 hours or less represents a transit in AA's vocabulary.

I understand the term "within 24 hours" to be equivalent to "up to 24 hours".

I will let y'all know how this goes. Cathay will be doing the ticketing as they have the first over water segment.

The reservation system indicates that transit is =<24 hrs.

The "*" means that it is considered a "married segment" (which is for transits only) and the fare calculation also shows HKG as "X" (transit).

Outstanding work. Thank you.

redundant

Married connections are airline-specific and have nothing to do with IATA fare construction rules. You should never imply anything from a married segment indicator other than a cancellation that does not involve the full O&D is subject to there being O&D availability on the remaining segments.

The /X in the fare construction instead does positively indicate that this was a transit for fare construction purposes.

While you are right to say that, AFAIK married segment can never apply to stopovers.

IMO it should be MCT + 24 hours, so that it clearly is just a transit if you are unable to take a once-a-day flight due to MCT rules.

Not so...

I have never seen them either, but there's nothing that says "can never apply". Married segments is a policy that individual airlines apply out of their own PSS to their own reservations, completely outside of IATA or any other standard body. That's why you don't see (at least as of now) married segments on interline reservations.

Nope. To repeat, it's a "deliberate interruption of a journey at an intermediate point from which the passenger is scheduled to depart later than 24 hours after arrival".

If there are no outgoing flights within the 24 hour timeframe, then it is not a deliberate interruption and therefore it is not a stopover; however, GDSs don't price this automatically (I believe because when they were programmed it would have been too resource-intensive to perform a schedule check), they simply assume that >24 hours is a stopover, so whomever issues the ticket needs to manually override the stopover in the fare calculation/ticketing command. This rarely happens in the developed world, but can happen in remote areas (I've seen it in the Southern Pacific Islands).