The front transaxle has a few gears, two ahead, and reverse. The 2 forward gears on the front transmission match the lower 4 ahead gears on the rear transmission. It's not necessarily used in higher gears. The link between this gearbox and each entrance wheel is by way of independent https://alexisuncrg.cosmicwiki.com/1364975/the_fact_about_4x4_that_no_one_is_suggesting