It's been 2-3 years since 6 of us at the same address got shut down with a total of about 20-25 cards total.
Checking accounts never affected.
We keep applying every few months, and every time (after clearing other issues) they always come back to those closures from then.
My mother at that address got a approved for sapphire a year ago (she was never shut down because she didn't have any chase cards)
Just spoke to chase executive office, they don't sound too hopeful but will see