In my opinion, you should each carry enough gear with you to survive should you get separated. At a minimum, you should each have a sleeping bag and some sort of rain shelter with you and preferably enough no-cook food or food and stove and water treatment to get you back to civilization. You should also each carry your own clothes. I guess what I'm getting at is that you split the food load and each carry your own gear. Getting separated is probably not too likely but is much more survivable if each member of the party is more or less self-sufficient. And, you should each have your own map and compass and know how to use them to navigate.

Have a great trip.