granting all this

The reply, in effect, is, Granting all this to be true, what does it amount to?

Then, granting all this, how does it come about that you, a member of the Interstate Commerce Commission, wear no collar?...

But granting all this, was it really worth while?

"But granting all this, Matt, why must you go to San Hermano?"

Granting all this, there is nothing to show any mythological significance in the tale, though there may have been in the names of the dramatis personæ.