You are right about the compression, assuming you mean time compression.
I got a different capture of Scandal to compare. It ran 46:33, had no ABC or station bug or logo, and had the exact same content. Funny, there was a short period around the opening credits (~5 min in) where they ran at the same speed. And one place where a message about "tweet with the cast" popped up, it was only on the 44:09 version. I assume that means the other version was from Canada or ??
I know ABC shows for about 5 years that I record have been almost always close to 41:15 from two different stations, one in FL, one in TX.
I also checked a different capture of Grey's. It was 40:13 vs 38:21 (the same 5%). I didn't look to see if the content was identical.
Out of curiosity, I just googled "time compression tv shows" and got an education. Like it's been going on a long time. Which makes me wonder how likely is it for someone in the US to get a 43:00 ABC show? Do you know any stats on how prevalent the practice is?