EZE-BOG diverting to VVI probably would have been around 2.5 hours after takeoff in EZE before they were on the ground again in VVI.
6t for the takeoff and climb (30 min), 1t for the descent and approach (25 min), and around 9.5t for the 1.5 hrs of the initial cruise.
It would mean the fuel leak was not that significant if 17t or the 42t was not in the tanks on landing, probably in the order of 1t.