"Broadband connect" is their ADSL product provided over the BT network and is available to everyone, and it's crap because they refuse to pay BT for enough capacity. It's basically there so they can say to the rural plebs that they can take broadband from them.
A bit like how Virgin offers a dire ADSL connection for people not in their cabled areas, so that they can't get out of contracts because they're moving to a non-cabled house.
They also offer LLU ADSL to people who are connected to a telephone exchange with their equipment installed, probably "unlimited" or whatever it is - which is apparently a much better service than connect (when it is working). Then they offer fibre as well.
Biting the hand that feeds IT
