Vietnam > Beijing. 144 hrs transit . Open Jaw ticket: Beijing > Los Angeles. stopover. LA > Chile

Hi there,

are you able to advise or if not can you confirm to which official body I should forward my question?
Our travelling plans are pretty straightforward and are really the most basic scenario for a visa-free transit.
Arriving in Beijing via flight from Vietnam. Staying in Beijing for 144 hrs, departing towards US / Chile. Our departing ticket would be an Open Jaw ticket though, i.e. one booking, two separate tickets with a stop of few days in between, Beijing - Los Angeles (or other US city), Los Angeles - Santiago.
Would there be any reason for not being granted a visa-free transit when the following flight is an Open Jaw one? Thanks!