I think our differences lie in our understanding of what faith is and is not.
I run with essentially, this definition of faith;
Belief that does not rest on logical proof or material evidence.
So, the way I look at it, faith is simply anything that is not deducted from logical proof or inferred from material evidence. Assuming materialism (in the case of Atheism) or assuming the existence of a deity (in the case of Theism) would fit that description.
From that point other leaps of faith
may follow (especially among the various denominations and different religious sects), but any conclusion that is simply a logical consequence of that initial leap of faith (and possibly other material evidence and/or logical proof) would not classify as a
second leap of faith.
Logical proofs and/or material evidence may lead to different conclusions from that initial leap, but that doesn't mean the conclusion is necessarily leap of faith in and of itself. It all depends on the rationale behind the conclusion.
The validity of knowledge is a very interesting point in this. Empirical confirmation is one thing, but logical deduction is generally considered less certain or, more accurately, less verifiable. As knowledge gets less and less verifiable when does it start to become more faith or does it even qualify as faith?
I take it you are saying that at some point, that knowledge becomes more rooted in faith? That is an interesting way of looking at it; a spectrum between unquestionably verifiable knowledge and knowledge rooted in faith. You've given me something to think about. Thanks!