Can anyone tell me that how much back home Gynae&Obs experience

Needs an information

Can anyone tell me that how much back home Gynae&Obs experience is acceptable to be applicable for Gynae& Obs ST1 post. I read that now they have increased it to 24months.

Another thing if a person was a gynae tranie back home and did medical and surgical rotations each of 3 months during training then how would be experience calculated?

would they take these months of rotation from gynae experience or it would be included in gynae experience?