Is the Xbox 360 disc version of Portal 2 compatible with the Xbox Marketplace version?

I just wanted to know if I could play Online Co-Op with my friend on Portal 2 because he has the disc version and I am going to buy the non-disc version. On the game Skate 3, the disc and non-disc versions seem to be running different patches, therefore I cannot play online with my friend. I was just wondering if this was the case for Portal 2.
Thanks
Best Answer
Playing co-op is definitely possible in this situation. You are correct that the games will have to have the same patch/version number.
All Xbox 360 games, whether disc or downloaded, will update to the latest patch when the game is started and your console is connected to Xbox Live. The patch is stored on the hard drive, and will be installed whether you use the disc or downloaded version.
Therefore, you will need to connect to Xbox Live at least once to update. This should not be a problem if you are playing co-op over Xbox Live (the game will force you to update or sign out of Live), but playing via system link/network play will not automatically update.
If you are playing over system-link, be sure that both of you have started Portal 2 while connected to Xbox Live at least once recently. An Xbox Live Gold account is not required, the free account version should be sufficient for the update.
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Is Portal 2 disc backwards compatible?
Valve mainstays Portal 2 and Left 4 Dead are now backward compatible on Xbox One, Major Nelson announced today. Those two titles bring to 200 the number of Xbox 360 games playable on the new console.What consoles can I play Portal 2 on?
Portal 2 is a 2011 puzzle-platform video game developed by Valve for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts.Do 360 portals work on Xbox One?
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