Goa's Snehal Kauthankar and Kashyap Bakle stitched up the highest partnership of unbeaten 606 in Ranji Trophy's history on day two of their Plate Group match against Arunachal Pradesh on Thursday. Kauthankar's quicksilver 314 off 215 balls and Bakle's steady 300 off 269 balls powered Goa to a colossal 727/2 in just 93 overs, giving them a 643-run first-innings lead over Arunachal. Kauthankar, 29, led the charge, reaching his maiden triple hundred in a mere 205 deliveries, his innings studded with 43 boundaries and four towering sixes. Known for his aggressive stroke play, Kauthankar shattered his previous best of 250, scored just last week against Mizoram, as he carved through Arunachal's attack. By lunch, he was unbeaten on 305, with Bakle, who provided ideal support, poised on 280 not out.