Please refer back to the OP.
Because it’s impact is so great, it’s something everyone should strive to know. Unfortunately I will probably never state publicly what I know or don’t know in this area.
The actual knowledge is far more more powerful than any faith or confidence. Again, see the similes in the OP that describe the Buddha’s realisation of rebirth.
The noble eightfold path. When your samādhi is really strong, turn your mind to your earliest memory and keep going backwards.