IWR1642BOOST: Extend people counting range to >14 meters

Hi everyone!

1) I'd like to build a people counting system that has a range of 30-40 meters. The documentation states the short range config reaches ~6 meters and the long range config 14 meters.

Is it possible to tweak the configuration and count people in a range of at least 30 meters, or is 14 meters the absolute maximum range?

2) Is there a major difference between the IWR1642 and IWR6843? Or could they both work in a simple people counting system?

Thanks in advance!