If you found syphilis at 9 months would it be too late to cure it?

Never too late to Rx: Syphilis progresses in 3 stages, the initial sore, the blood borne spirochete, and finally crossing the blood brain barrier. Unlike the carol king song "it's too late" from her tapestry album, we rarely see 3rd stage disease because it is usually caught and treated prior to infiltrating the brain. Can that happen in 9 untreated months? It depends on the hosts' resistance and the rapidity of rx.