I'm sure they'd love to take your offer but if they don't have the cash to make up the difference between the mortgage and the offer they are in a real bind. They may be negotiating with the bank.

If there are other properties that you like, I would move on. If you really like this property you have to realized that it may be a while before the sellers get the financial kinks worked out.

Just because they didn't respond, that doesn't mean they can't meet deadlines or sign papers in time - it simply means they are not interested in selling to you at that price. Why is this so confusing?

You don't sound really sold on this property or you'd be looking for ways to make the sale happen, not to make it fall through already.

Me? If I liked a property well enough to make an offer, I wouldn't let a few hours deter me. If they were to come back with an acceptance the next morning, I'd assume they were ready to go ahead. And really, do you think the agents involved are going to jeopardize their commissions on the sale? They'll make sure the sellers have things signed on time when it's necessary.

But given that you're sort of on the fence, this is a good excuse to withdraw your offer, too.