IWR6843AOPEVM: What are we waiting for after sending the config commands?

Hello,

In `mmwave_industrial_toolbox_4_10_1/labs/People_Counting/visualizer/oob_parser.py` there's this code snappet for config file sending:

#send cfg over uart
def sendCfg(self, cfg):
    for line in cfg:
        time.sleep(.03)
        self.uartCom.write(line.encode())
        ack = self.uartCom.readline()
        print(ack)
        ack = self.uartCom.readline()
        print(ack)
    time.sleep(3)
    self.uartCom.reset_input_buffer()
    self.uartCom.close()

Question here is: Why do we need to wait for 0.03 seconds in the loop and 3 seconds after sending?

Thank you :-)

Best Regards

Woody