The teleportation circle spell description states that:
You draw a 10-foot-diameter circle on the ground that links your location to a permanent teleportation circle whose sigil sequence you know and that is on the same plane of existence. A portal opens in the circle and remains open until the end of your next turn. Any creature that enters the portal instantly appears within 5 feet of the destination or in the nearest unoccupied space.
If the creature casting the spell and a creature next to the permanent teleportation circle are in constant communication with each other (sending stones for example), would the creature at the permanent teleportation circle be able to ride the portal backwards to the caster's location?
If not, besides gate, are there any other means of accomplishing something like this on the same plane of existence?