You are advising someone to commit a crime (immigration fraud). Given the timing and older age they will need to show that they are actually divorced. Property and funds divided like a real divorced couple. They have been living in separate places. The fact that they were not listed as divorced or separated on their current applications will be referenced. Lying about getting divorced is a very bad idea.Ask them go to court for divorce, its not ant hurt here since they are still loving each other, even if u apply next year, same thing unless you are divorced