can levels be used in multiple subscriptions

I've been making levels like this:

Subscription 1: Level 1
Subscription 1: Level 2
Subscription 2: level 1
Subscription 2: level 2
Subscription 2: level 3
etc

Can I just make levels 1-5 and reuse each level between each subscription? Would level-protected content from subscription 2 be hidden from a member who is only enrolled in subscription 1?

Then would member in Subscription 1 Level 4 who signs up for Subscription 2 be able to access Subscription 2 Level 4 content?