Clarifying / Confirming

Are you saying that

Do you mean

In other words,

Let me see if I'm following you here.

Let's see if I've got it:

Now, if I understand you correctly,

So if I've got it right, your position is that

So the whole point of this is

So what you're really saying is that

So what you're trying to tell me is that

So, according to your theory,

Then would I be correct in assuming that

To put it another way,