This is in response to the above posts about my OP.
We have both been GM for a while and clear together, when it happens, at the GM time or earlier on rare occasions. No doubt about that.
We don't split the PNR because we want to sit together. Yes, that means the computer could pass us by. However, since upgrades go to the gate more often these days, it not a problem because we have had the GA call us up and ask if we want to take the one remaining upgrade. We make someone else happy (one time they were standing at the counter and thanked us and sent us drinks).
In regard to the short upgrade list, this was DFW-ATL at 2:57 PM on Monday.