If divorce is filed and it reached the 60 day perfection period, is it considered as legal separation or is it finalized?

The 60 days is not an automatic "perfection" period. It is a waiting period. You must ether file the final documents in lieu of hearing or have a final hearing. If all that happens is the expiration of time, you're not divorced and if 6 months goes by your matter can be dismissed, leaving you married. Legal separation is an entirely different filing from divorce. No waiting period needed to separate but you still need a hearing or final documents. Hope this helps.