ITA Hacker -- I just ran into a weird inconsistency between the lowest price shown in the calendar view and the lowest price shown in the complete trips view for the same day.

Search for round trip PDX<->GUA using the calendar mode with the following parameters (others left default):
* routing codes (both ways): aa,as,dl,ua+
* extension codes (both ways): -cabin 3;-overnights;-redeyes;f ~(aa,bc=b|as,bc=x|dl,bc=e|ua,bc=n|ua,..-lgt)
* start date: 2023-02-01
* duration: 6-8 nights

In the calendar view, the lowest price shown on several days is $1486. I clicked on Mon, Feb 6. The popup indicated that the 8-night itinerary was the one with that price, so I clicked that next. The list of trips then showed that the lowest price was actually $1099! Just to be safe, I then even confirmed via AA's website that the fare was findable. There were a few days for that particular month where the complete trip view showed a lower price than the calendar view, but I'm not sure what the common factor was. Most dates seemed to be unaffected in this way.