PBA, great question. The daf made sense top me in shiur, and I wish I could remember what the maggid shiur said. Have you tried http://dafyomi.co.il/ they have a daf point-by-point summary, among other things. I would have investigated myself, but my phone can’t access that site (problem with frames).
I will b”n listen to a recorded shiur to find out the answer to your question.