What about the Falcon heavy that returns the boosters to land simultaneously
Eh?
Are you still on about bird boxes?
Falcon Heavy is a partially reusable super heavy-lift launch vehicle[9] designed and manufactured by SpaceX. It is derived from the Falcon 9 vehicle and consists of a strengthened Falcon 9 first stage as a central core with two additional first stages as strap-on boosters.[10] Falcon Heavy is the world's fourth-highest capacity rocket ever built, after Saturn V, Energia and N1, and the most powerful rocket in operation as of 2018.
SpaceX conducted Falcon Heavy's maiden launch on February 6, 2018, at 3:45 p.m. EST (20:45 UTC).[5][11][12] The rocket carried a Tesla Roadster belonging to SpaceX founder Elon Musk as a dummy payload.[13][14]
Wikinews has related news: SpaceX Falcon Heavy rocket blasts Elon Musk's personal Tesla into solar orbit
Falcon Heavy was designed to carry humans into space beyond low Earth orbit, especially to the Moon, Mars, and potentially to asteroids for mining, although as of February 2018, Musk does not plan to apply for a human-rating certification to carry NASA astronauts.[15]