It was sent to arbitration last June to be thrashed out behind closed doors; a contractual dispute over the supply of intensive care ventilators to the HSE during the first onslaught of Covid-19. The deal to provide 350 ventilators for just under €7.5 million was signed as a matter of urgency late on Friday March 27, the same evening Leo Varadkar, then taoiseach, announced on RTÉ television that the country was going into full lockdown to suppress the spread of the virus.  Afterwards, the HSE rowed back on the agreement with the ventilator supplier Narooma over concerns about whether the…