Also, if the node is already using SF7 (like it was in my tests) then there's nothing lower than that? (LoRa defines SF6, but LoRaWAN does not use that. Or maybe ADR could make it use FSK, but even then there's not a lot more to be adapted?)
@Batilan was wondering if packets with a much lower SNR might simply not affect packets with a much better SNR, rendering my observations moot? (Yes, please!)