New Delhi, Jan. 16 -- What began as a fairly harmless exchange between two outspoken corporate leaders quickly turned messy, with the discussions spiralling into name-calling and public insults. In the latest twist to the Starlink row, Elon Musk has escalated the war of words with the billionaire CEO of Europe's biggest airline, Michael O'Leary.

The CEO of Ryanair Holdings on Wednesday ruled out the proposal of installing SpaceX's Starlink internet across the low-cost airline's fleet because of fuel costs from the weight and drag of the antenna mounted on the roof of the cabin.

"You need to put antenna on fuselage it comes with a 2% fuel penalty because of the weight and drag," Ryanair CEO Michael O'Leary told Reuters. "We don't think o...