IWR1642: Mismatch of TX start time location in Radar studio and application note swra553.pdf

Part Number: IWR1642


In application note "Programming Chirp Parameters in TI Radar Devices" (www.ti.com/.../swra553.pdf), customer found below Typical FMCW Chirp. You will find that TX start time is inside the adc start time.

But in Radar studio, you will find TX start time is inside Idle time.

Would you pls kindly advise which one is correct?