No you've got the gist of it: the point is that numbers for CO2 emissions of LNG assume a leak-free supply chain. That's not possible in practice: LNG leaks at

No you've got the gist of it: the point is that numbers for CO2 emissions of LNG assume a leak-free supply chain. That's not possible in practice: LNG leaks at almost every single step, and monitoring of it has been inconsistent and poorly implemented. Add in the significantly higher greenhouse effect of methane in the atmosphere, and you lose essentially all the potential benefits (not to mention the ultimate issue of continuing to add sequestered CO2 back into the atmosphere - it's still a fossil fuel).