Had an "aviation expert" from an oil company just freak out when he found we were flying 2 different types on the same day. His big fear was that we would confuse procedures in the event of emergency.
We told him that if we didn't know the difference betwixt a 212 with 3B engines and a 76A++ then there were some bigger problems.
It also became soon apparent that he had no experience nor even a rating in either type.
Fun daze!
The engineers wanted to kill him and bury him at sea.