Time between FUE sessions?

[Mike2020]

I've contacted some hair transplant surgeons in relation to FUE.

Responses include: "Two FUE sessions, 6-9 months apart", "Two FUE sessions 12 months apart", and "A two days session" with no mention made of time period between sessions. Would presume it sounded as if it meant two consecutive days.

Are there advantages to spreading two FUE sessions out over a period of 6, 9 or 12 months as opposed to two consecutive days? Is 12 months better than 6 or 9 months?

I would be at least Norwood 5, and probably more likely Norwood 6.

Thanks.