Each has its own password/network key Are you saying they are different or am I missing the point?
They both need to have the same SSID and passphrase to be able to communicate with each other. Or is it just a weak signal you are experiencing? There are many factors that could influence that, the distance between the two devices, thickness of walls etc.
Qualcomm Snapdragon 835 benchmarks: Antutu, Geekbench 4, GFXBench and PCMark results