For a second weekend in a row the ALL-INKL.COM Münnich Motorsport pair both looked a safe bet for a place in the top 10, with Esteban eventually edging his Argentinian compatriot by 0.051 seconds as they secured sixth and seventh.
Esteban, who also earned a bonus point for setting the fifth-fastest time in Q1, was just a tenth away from advancing his Honda Civic Type R TCR to the Q3 pole position shootout for a second round in succession.
He will start both races alongside the Championship leader, whom he trails by 25 points.
Nestor meanwhile continued his strong run of form by making the top 10 in qualifying for a third round in succession.
He will have the podium in sight in Race One, as he will start from fourth on the partially reversed grid.