“According [Sara] Carter’s reporting, a handwritten note suggests that in November 2016, Ohr may have met with FBI counterintelligence official Peter Strzok, FBI lawyer Lisa Page and FBI Special Agent Joe Pientka, who would later interview former National Security Advisor Michael Flynn.”
https://www.breitbart.com/big-government/2018/08/13/bruce-ohr-testify-christopher-steele/
Pientka remains an unknown for me ... my guess has been that he’s cooperating & critical to proper recall of these events.