Timetables of GN segments in ORS

Hello all,
Was doing some cost-benefit analysis on whether to add some connections direct from Tenerife North when I fly them out of Tenerife South. I noticed that the timings of the existing TFN - TFS ORS ground network segments were on a fixed timetable, every 80 minutes even if connection times were uneven unto the connecting flight from South. Case in point I did this on other combinations across my network and different hubs etc… but i got genuinely curious, since these seem to be set timetables:

What is the method of determining the frequency of these connections? Is it a bar-to-bar fixed number?

How is the determined timetable, if regular as i predict, formed? I saw in some cases there was a common 00:00 LT segment - is this the point zero and then counted based on the frequency established?

Does this differ for airports with night bans? (So eg can I take a segment from Gyor-Per (no NTB) at 4 LT to catch a flight leaving Budapest (NTB) at 6:30 LT? or one from Bayreuth (NTB) to connect with a MUC departure (NTB) under similar timings?

What is used to determine the time requirement for these? Travel time on road? Or a number based on as the crow flies distances?

Thanks for help on topic, could not find anything like this on forums…

Ooph, that’s some seriously old code we’re talking about. I’ll try to dig it up next time I touch the old codebase.

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