can u xbox link in reach

the tite says it all.
and what is the 1.1 under reach in the title screen?

Yes you can system link with halo Reach. It says it on the back of the box.

The 1.1 is to reflect the title update that that was released.

• Make damage bleed to health through shields possible.
• Make reticle bloom configurable.
• Modify Armor Lock.
– Sticky grenade will not be nullified if you use Armor Lock after being stuck.
– Damage received while in Armor Lock is transferred to remaining Armor Ability energy.
– How much the damage depletes your Armor Lock energy is configurable.
• Modify Active Camo.
– Reduce the bonus time the player gets in Active Camo while standing still.
– Reduce the overall length of time the player can be in Active Camo.
• Remove Sword block.
– Disable the ability to block Sword attacks using melee with anything other than another Sword.
• Enable playing Co-Op Campaign and Firefight without requiring a HDD.

Original Link: http://www.trueachievements.com/n5569/halo-reach-title-update-releases-today.htm

Yes, you can system link.

The 1.1 is the game version. 1.1 denotes the presence of the TU.