1) In March 2017, Carter basically told the FBI to go pound sand. (my interpretation)
2) I can find no connection between Page and Poteyev, other than both of them potentially getting sucked in by the whirlwind that is the Steele dossier, thru no fault of their own.
(Really good video here. Explains maybe 80% of Poteyev's story.)
Comey orders his team to get as much of it verified as possible.
Carter Page is interrogated a total of five times.