Been reading the comments.
2 channels would make sense when, for example:

Org 1-5 keep the same data. They will see chain code 1, and ledger 1. Let's say servers. 
Majority orgs approve, meaning 3 would endorse.

Org 6-7 for example, are on channel 2. They will see chain code 2, and ledger 2. Let's say data-generating devices.
Majority orgs approve, meaning 2 would endorse.

Is there a way to link both ledgers? for example, some data from ledger 2 becomes input (transaction) for org 1?