AWR1843BOOST: how to calculate the angular resolution and set 3 Tx antennas

hi, engineers,

I studied the TI resource SWRA553A 

Programming Chirp Parameters in TI Radar Devices (Rev. A)

for 2T4R mode, the angular resolution is 14.3°;

 for AWR1843, TX0 and TX1 can work simultaneously when TDM-MIMO radar mode. TX1 and TX2 also.

but whether I can let TX0, TX1 and TX2 ,these three antennas work simultaneously, so that the angular resolution is  9.5° according to the formula below:

I just set two Tx successfully for their working simultaneously with mmwave Studio.

I want to improve angular resolution, especially for 3 TX work simultaneously.

Regards,

Wembanyama