The antenna in the store says "Requires second SDR and software setup to receive 978". Can I connect two SDRs to my Pi4 and use a single antenna? How would I connect one antenna to two SDRs? Can the PiAware software process data from two SDRs?
TL;DR: yes, Y-cable. Yes, a Pi can take two SDRs assuming they will physically fit in the USB sockets and both can be fed with one antenna. Some variations of the Stratux ADS-B IN receiver kit do this with a Y-cable (instead of a spliter/combiner). The ADS-B IN receiver in my airplane (made by Uavionics) is a dual-band receiver and (thankfully) uses a single antenna. I was given a complete Stratux setup and immediately repurposed it to feed ADSBexchange so I can personally verify that the Y-cable "works" although it's contrary to everything I have learned about RF. I'm in the process of replacing it with a MiniCircuits splitter/combiner I have on hand and will attempt to quantify any performance improvement I receive. The Y-cable may be "good enough" but if I were starting with a clean slate, I would use a proper 1GHz splitter/combiner.
