Rx1_L Calbration

I wonder how the signal at the RX1_L is calibrated.
From the schematic there is not connection between the RX1_L input and the SPDT switches which perform calibration.

Calibrations are done using chip’s internal loopback.

Can we deduce when RX1_L (or RX2_L) is used, the external SPDT switches are completely unnecessary and can be removed? (It has been reported that the bypass caps can cause spurs at the multiples of 100 MHz).

For calibrations it is not necessary, but I’m not sure if anything else might need it.