>>11092937That is literally the plan.
Except you only need 1 Tanker, not 2.
Both Starship and this additional Tanker get refueled in LEO. If you want you can refill 2 Tankers in LEO, then launch Starship, then immediately refill it using up one Tanker, if you don't want to have people waiting in LEO for as long as it takes to launch ~5 refueling flights.
Anyway, Tanker and Starship burn towards the Moon. They both use up half their propellant load. While burning they stay in close formation, and once the engines shut down they immediately approach one another and dock. Tanker transfers its propellant over, Starship is now full. Starship then continues firing, far from periapsis but that doesn't matter because it has a huge propellant margin now. Tanker just coasts until it comes back to Earth. Starship gets its moon intercept, lands, deploys cargo, does whatever, then launches. It only needs enough delta V to escape the Moon and end up on a trajectory that puts it into the atmosphere at periapsis, then it lets aerobraking do the rest, the final engine burn being the landing.
From the perspective of a person on Starship, they launch, rendezvous, dock, and transfer propellant in LEO for anywhere from a week to 6 hours, depending on whether there's a full Tanker waiting for them. Then they depart for the Moon, and they get there in slightly more than 3 days, doing the second fuel transfer along the way. They land on the Moon, do whatever, Starship leaves and gets back to Earth in 3 days. Depending on what Starship is doing (just dropping off cargo vs acting as a habitat) it could stay less than 12 hours or more than a month. In all a cargo-drop-off mission to the Moon with Starship would take 7 or 8 days total.
