MSP430FR59941: MSP430FR59941 queries

Hello, please help us on the below queries w.r.t. MSP430FR59941 :

1)      BSL I²C signals BSLSCL & BSLSDA are multiplexed with TB0.4 & TB0.3 on 48-Pin RGZ package.

1. If TB0OUTH signal is asserted, what happens to these BSL I²C pins ? Are they also switched to High-Impedance state along with other TB0 output signals ?
2. If these pins are configured as slave I²C pins later on, what happens to these pins if TB0OUTH is asserted ? Are they also switched to High-Impedance state along with other TB0 output signals  or they still continue to operate as slave I²C pins ?