Well, I guess I can offer some info since this has actually happened to me!

[He taps his chin, thinking back a bit.]

I was here almost two years, but when I went back home, it was like no time passed at all. I spent six months back home before coming back, so...

[Oh, this is suddenly getting complicated.]

Ya know...I'm not sure if those six months just got added on to the almost two years or if I came back with a clean slate, age-wise. Does...that make any sense?