Eh, there’s a lot of funky stuff going on with the i2c bus on that one https://cdn.sparkfun.com/assets/1/5/f/a/e/SparkFun_LTE_GNSS_Breakout_SARA-R5_Schematic.pdf
You might be able to interface with it…this thread is for a different board but similar I2C not working on F9P boards - #7 by clive1 (not sure what you’re after on the internal i2c but it’ll probably be easier to set it to just output those msgs on another port)