Hi! Hoping for some advice from the experts.

I need to get from Reno to JFK in early September, and my most ideal itinerary involves the following flights:

• AS 3444 - departs RNO 10:10AM, arrives LAX at 11:45AM
• B6 1524 - departs LAX 1:45PM, arrives JFK at 10:29PM

Here are the questions/considerations though:

1. I'm checking bags... do AS and B6 have an interline agreement?
2. Do I absolutely need to buy this as a single ticket to get them to tag my bags all the way through?
   1. If yes: any tips on how to purchase a ticket like this?
   2. If no: how does it work?
3. If I decided to re-check my bags in LAX... is that an awful idea? I think it is. But appreciate the validation

Thanks in advance for any help!