Were both Amber and Chara alive at the same time since that was the time the wizards created the barrier? Or was Chara or Amber already dead?

Greetings! The name is Time Lizzy, or Time as my friends call me. They/Them pronouns. I love to try new things, draw, sing, dance, garden, and I do some witchcraft in my free time. I'm a Hetalia role playing partner if you guys are interested. View all posts by Time Lizzy Saint