How can I tell which offer is signed up first, by the order they display in my DL account?

Can the CSR tell the sequence? When I call them to ask for explanation of the terms and conditions, they all immediately pull up the 40% offer. I have to ask them to look further in my account to find the 50% first time offer.

Also, the ratio on AMEX website is 1:1, how does the 50% bonus post when I transfer the miles? Does the 50% comes from DL posts immediately or a few days / weeks later after the transfer?