ahh yes, I'm very curious about that part as well, I get that Oswin vould have had gotten Orlando's father's scales, But we still don't know how they got Dave's (the father) dan as well... Unles... Nah it couldn't be... Could it...? What if Dave (the father) was the survivor of Oswins experiments for his "cure all" medicine...?
Then we'll all wait and see until the answer comes further and love your theory tho
actually it makes sense that
Dave (dad) was the survivor of oswin's experiment. And that Oswin HAD to make sure all the patient's he was testing on wasn't allergic to the vaccine he made. And he took fur of Dave(dad). Also explains why he became a police officer in the first place.