Qantas has been doing ITI check-ins for luggage since about 2018, so should get it right, but it is critical that Master Street visually confirms the ITI status on his luggage. With that confirmation, he will be free to sail through the baggage claim area and exit to landside before his left-turn/u-turn back to airside. Clearing CBP, you are herded down escalators and into the baggage claim, just make a right turn and move along the wall until the clear path to the exit appears to your left. Many people mistakenly walk forward, past the baggage claim carousels and then move along the far wall, only to find they then have to back track alongside another carousel to exit, as they (for some reason) added barriers to channel people back to the starting wall side of the hall.

This web page (https://www.dfwairport.com/security/) can be useful for determining the security checkpoint to use, BUT Master Street should only consider the Terminal D checkpoints as options. Landside Inter-terminal transfers at DFW are third-world (irregular and unreliable buses), and not to be used except in highly unusual circumstances.

The same website offers an interactive map that can be useful, especially to pass time in the CBP line once he knows connecting gate information. (https://www.dfwairport.com/map/)