You may bee right 12cheman12. I like this idea better: Post 515524 (https://www.thevespiary.org/talk/index.php?topic=8126.msg51552400#msg51552400)
(kris_1108: "Alternate", Stimulants) but yours may bee easier to set up, with less items to acquire.
I am speculating that by the time the FB vapor travels through the hose and reaches the second flask, the temperature will bee some 10°C cooler and the FB will then recrystallize in that flask.
From what I've heard, the distillation has to bee watched closely because its easy to burn up the FB with excessive temps.