Originally Posted by
pickles1107
How does one "link" the two accounts?
I called a CSR and they didn't know what I was talking about and also told me that the 10% bonus is not a benefit of the Freedom card.

It is supposed to be done automatically for you. Every JPMC customer has a unique numerical identifier that links together the entirety of your relationship (checking, savings/CDs, credit cards, car loans, mortgages, investments, etc.). Occasionally, people end up with duplicate identifiers so the bank can't readily see, for example, that the customer has both a Freedom card and a Chase checking account.
I would just send a SM asking to confirm that you are eligible for the 10% bonus since you have a Chase checking account, that way you have something in writing.