I’m not sure exactly what you are doing, all I can say is what I would do.
Company Post Type
relationship field => Workers
relationship field => Reviews
Worker Post Type
relationship field => Company
relationship field => Reviews
Review Post Type
post object field => Worker
post object field => Company
I would se the relationship and post object fields to be bidirectional
When a review is submitted there would be 2 fields for the worker and company the review is for.
These fields would be hidden if I did not want the person filling in the review to be able to select. If this was the case then I would generate the value that needs to be submitted using an acf/prepeare_field filter.
