Two participants calling the same sub-process (call activity) in which they both participate.

Dear Forum Members,

I am new to BPMN to BPMN modelling and would greatly appreciate an opinion of the matter below.

Could the following hypothetical case be in line with BPMN? If not, what is wrong with it?
PARENT PROCESS:

SUB-PROCESS (CALLED ACTIVITY):
image

I guess the gist of the question is whether 2 participants may call the same sub-process (in which they both participate) in a simultaneous manner?
Is it safe to assume that for each call each participant will be redirected to its respective pool within the called activity?

Best regards,
Jafar