LOL, did you read the whole thing? tiny print too… 
OK Anyway Depending on several things, How you program the PIN_MODE for the interrupt pin is one.
Then how you program the chip to act with the Interrupt pin internally.
the above uses the Latching" feature of the pin. ie. interrupt is asserted until you READ the WAKE_UP_SRC register. You can change that mode to only interrupt on a Free_Fall and release Interrupt after it’s within threshold.
this is less desirable for my application btw .
READ the app_note
Look over the Code in the New thread…here.XIAO nRF52840 Sense Free-Falls , Sleep & Double Tap Wake Up Demo
HTH
GL 