Different products may be treated differently. If bridge loans only come in through the one branch or the mortgage company, they are arguably a different product and can be treated with unique underwriting criteria as long as those criteria don't discriminate and have a business purpose.
However, if the bank is simply going to treat loans differently because they come in that door instead of another one, you should have a persuasive reason for treating those applications differently. This would have to amount to distinguishing them as a separate product.