There might be a lot of talking right now, but that doesn't mean it will happen any time soon. The hedge funds are the ones talking it up, and they are always looking for ways to make a quick buck.
I agree General, just a lot of talk, very unlikely at this time. Most of the benefits can be derived through the current code share arrangement with NWA and the DAL joint venture with AF and KLM.
Here's a fleet snap shot for what's it worth.
NWA has 31 B747s DAL has 0
DAL has 8 B777s, NWA has 0
NWA has 33 A330s, DAL has 20 B767-400s
DAL has 80 B 767-300s, NWA has 0
DAL has 136 B 757s, NWA has 72
DAL has 71 B737-800s, NWA has 75 A-320s
DAL has 136 MD88/90s, NWA has 0
NWA has 66 A-319s and 115 DC-9s, DAL has 0
To summarize, DAL has significantly more wide bodied aircraft, but NWA's has 31 747s.
DAL's 757 fleet is roughly twice as big as NWA's.
The smaller narrow bodied fleets are about the same size, but DAL's aircraft are slightly larger.
Pilot demographics are somewhat comparable, so I don't see the same dynamics as the AAA/AWA merger.
Likelihood of a merger anytime soon, minimal. JMHO