Yes, but the European airlines usually turn their flights around from the US in a few hours because they have a rested crew ready to take the aircraft back to Europe. Because the flight is now being operated by a charter carrier there is no rested crew waiting in Oakland.
BTW, flight is now showing delayed another 3 hours, so the flight is leaving 39 hours late.
PS. Crew rest is a legal requirement and HiFly or Norwegian cannot break it.