Communicable is not the right word to describe this, as this actually means "easily communicated" -- which is to say, "easily passed from person to person". It's often used for diseases, such as the common cold or influenza, which can be easily transmitted from person to person.
Instead we would say that they are good conversationalists, in that they are skilled at carrying a conversation.
Sarah is such a good conversationalist, that an hour talking with her feels like ten minutes.
A related expression is good communicator, meaning someone who is good at relating information to other people, usually in the context of a speech or other public oratory.
Former U.S. President Ronald Reagan is often referred to as The Great Communicator, as he had a way of speaking that made everyone feel like he understood them personally
That being said, a good conversationalist is specifically someone who is easy to talk to. It's doesn't necessarily mean they are especially friendly or nice outside of conversation. If you want to convey those qualities, you can use affable, which implies being easy to talk to:
affable (adj): Friendly, good-natured, or easy to talk to.
He had an expansive, affable personality, and loved nothing more than to sit down with anyone and talk for hours about anything and everything.
Side note: The expression "A is way more than B" is slang and should not be used in any kind of formal writing.