Use GitHub Copilot plugin and Full Line Code Completion plugin simultaneously

Question

Even if the GitHub Copilot's code completion is turned off, the Full Line Code Completion cannot be enabled. Is there any way to use both GitHub Copilot's other features (e.g. chat) and enjoy Full Line Code Completions from JetBrains, simultaneously?

Answer

The issue is similar to the conflict between AI Assistant code completion and GitHub Copilot code completion. Please find the solution in the article JetBrains AI Assistant code completion doesn't work if GitHub Copilot is installed.