The context for this question is google flights has Breeze Airways but ITA does not have Breeze Airways, and I really like the Time bars (and other features) on ITA.
For a clear concise example. Try booking on Google flights 04DEC2023 ORF to OAK. one way
And then change it to multi city with LAS 04DEC2023 ORF to LAS. 04DEC2023 LAS to OAK.
The same is available with 13MAR2024 and LAX instead of LAS
I understand Breeze (and Southwest) are not on ITA matrix, but as I book the flights directly with airlines and just use the software to find flights, this (and a few other flights) would be very useful for calculations, to the point, I would gladly manually add the one or two (dozen) flights I want included to like, a local ITA database addition. This is easiest with Breeze since they fly two flights a week between certain airports.
I understand this is likely a huge ask, so if the answer is "it's impossible". That's Okay with me. I figured the experts on ITA matrix were on the stack exchange as I've learned more here in a day of browsing than anywhere else, so if y'all say it's impossible, I'll give up immediately.
(Added confusion with Google flights, the default option is to show separate tickets, but it doesn't usually. I know this often adds baggage issues or flight delay issues, but this layovers for these flights are often hours above airport requirements)(and I don't check luggage or see why Google avoids them so heavily)