A Big Bang/Big Crunch Black Hole is a small String Globule compressed by the decreasing respectively increasing pressure of the absorbed string vacuum.
A White Hole is a diluted vacuum hole ( with the least local vacuum pressure) in the oscillating String vacuum between 2 or more black holes to form a star or Galaxy, able to catch a black hole by the decreased local vacuum pressure. (Q-FFF Theory)
Conclusion: The well known central Galaxy black hole seems to be interchanged at the white hole location of the first Galaxy.
The magic of Galaxy formation via a SuperNova Nabula between two SABHs (Stellar Anchor Black holes, with central white hole / black hole in the middle.
