The Long Island portion was to create a 3rd set of tunnels under the East River with a connection to the Old Montauk Branch and Electrify that will speeds increased to 110mph it would rejoin the main line at Jamaica-JFK which would be its first stop. Then it ride along the Main Line breaking off at Floral Park onto a reconfigured Hempstead Branch interchange , then it would share that branch until Garden City. The Hempstead Branch would be grade separated. The line would continue above and below ground using the abandoned LIRR Central Branch before merging back into the main line by Farmingdale and riding that out to Medford before curving north along one of the highway rows to the Sound. The Sound portion could have been delt with an immersed tunnel.