The second browser doesn't know it's a backup device.

[jeffgca]

To repro:

1. create a new account in browser 1
2. link to browser 2

Expected result: both browser 1 and browser 2 are aware we have multiple connections.

Actual result: browser 2 still shows "backup recommended".

[jeffgca]

I can't reliably reproduce this now, but leaving open in case others see it.