Update2: In case someone else runs into the same hobbyist problem(s) that I did, this is the wiring that I eventually used successfully:
VCC - 3V3
CS - A2 (spi 1 ss)
IRQ - A1
SCL - A3 (1 sck)
MISO - A4 (1 miso)
MOSI - A5 (1 mosi)
GND - GND
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