Oh and 168 divided by 24 is 7.
Occasionally we have 6 day LHR trips from MIA-LHR-JFK-LHR-MIA
and DFW and JFK and ORD do the same to LHR as well as regular 3 day Europe trips.
Most trips south form MIA are 3 and 4 day trips returning at 4-6am on the 4th day.
But I like how you guys are thinking and on the next JBCA I hope we get limits like this or Better!