Originally Posted by
flyerCO
Book the earlier DL flight. If there's a delay on LH you can use SDC to change to other flight. If you book F you can SDC without regard to fare class. (There is $75 fee for DL GOLD or higher status) Economy fares require same fare class. Comfort Plus can also like F fares, SDC w/o regard to fare class. Can be done in app easily most times.
I would go the other way, book the longer connection to be sure, and try to SDC/standby as soon as you are confident you can make it airside again sooner.