How force grouping could have protected HMS Glorious

Would HMS Glorious and her escorts still have been lost under a more careful Norwegian-campaign command arrangement?

Probably not, because the carrier would have remained inside a cruiser-and-destroyer group instead of sailing with inadequate operational security.

The first change in this counterfactual is organizational rather than technological: Glorious would not be allowed to proceed independently. Keeping the carrier with Norfolk, destroyers, and other available ships would force any German interception to meet a stronger and less vulnerable formation. Better grouping would also preserve more warning and air-cover options than the historical arrangement. Improved operational security would make the loss of Glorious and her escorts much less likely, without guaranteeing every British ship's survival.