According to the Points Guy (sorry to quote a blogger here), if I get a Chase Freedom Unlimited, I can combine use the points I earn as full-fledged Thank You points IF the following conditions apply:

"However, as with the sign-up bonus, you can maximize your Chase Freedom Unlimited cash back if you also have one of three other Chase cards — the Chase Sapphire Preferred Card, the Chase Sapphire Reserve or the Ink Business Preferred Credit Card. With these cards, you can combine your Chase Freedom Unlimited cash-back points onto these three cards and turn them into full-fledged Ultimate Rewards points."

Right now I have a Sapphire Preferred, which I have no need for, and the old Chase Ink Business Plus (as opposed to the newer Ink Business Preferred), which I retain for the 5X bonus on cable and cell phone bills. If the Points Guy has it right, I can't get the Freedom Unlimited points counted as full-fledged Ultimate Reward points if I get rid of my Sapphire card.

Since bloggers don't always get it right and since I can't find any relevant thread here, does anyone know if the Ink Business Plus can in fact be used in combination with the Freedom Unlimited so as to get full-fledged TY points from the latter?

Thanks for any help.