No, IRCC will not see both application together.
IRCC will treat both separate applications even though if applied together. In SOWP application checklist is different and PGWP (primary applicant) checklist is different. You need to maintain proper document checklist for each application.
In SOWP application you must and should include Employment letter under O, A, B category and mandatory 3 paystubs.
I applied PGWP extension under public policy accompanying wife under SOWP.
I have attached my employment letter and paystubs, Covering letter, imm5710e,imm5257b,..to SOWP application..
Feb 4th applied
march 1: approved both applications