I’m going to move your portion of this thread to it’s own topic since it raises some challenges issues, but there might be other solutions. There are a couple of good proxies for tracking AC usage if your two devices are conflated.
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Power usage of the air handlers. My furnace air handlers turn on and off in step with my single stage AC compressors, albeit they start a little before and run a little after. If Sense is detecting those, or you can put on smart plugs, that could help.
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Your thermostats might give up some data. Ecobees are particularly good at providing data. Here’s a long thread on using Ecobee run data to check Sense detections.