In my case, my husband and I did go to the embassy to ask about the processing of his PR application, and later I also accompanied him to the interview. He was refused the visa.
However, the fact that I came to the embassy with him on both occasions was noted on our CAIPS notes. It is thus proof that I was travelling with him on at least two occasions. (The visa officer and later the appeal judge both implied that I was just travelling around by myself and was not in Nigeria to visit my husband; the two notes on the case file showing I was with him helped in that regard at least.)