Mitchaa, I love your optimism and devotion to the Hummingbird.
The ultimate ownership of the UK entities is irrelevant. There are two UK companies, both registered with Companies House, that will be merged following the purchase of one by the others parent company.
The last time this happened was in 1999. Then you had a Canadian company (CHC) purchase a Norwegian company (Helikopter Services group). TUPE applied when the two UK entities were merged.
As you say, things will become clearer, but it won't be weeks. My guess is Q3 2021 before anything starts changing.