Molecular Bonding Orbitas form from Superposition?

According to M.D.Fayer's Absolutely Small, Molecular Bonding Orbitals, in diatoms, form from the spatially symmetric (in-phase) -- and, hence, spin anti-symmetric -- addition, of the originally individual atoms' valence electron orbitals.

Now, when the diatomic molecule has formed, therefore, the electrons will be "phase-locked", fully in-phase. Yet, presumably, the individual atoms entered the interaction with random, and completely uncorrelated, "phase offsets".

Does this imply, that those phase differences, manifest themselves, initially, in the formation, by the valence electrons, of a super-position state, of some Bonding Orbital (BO) + some Anti-Bonding Orbital (ABO) ? Then, some sufficient "act of measurement", causes the super-position state to "collapse", into the energetically favored BO, and an optical (photon) "micro-signal" is generated, which, in the words of Wheeler, "irreversibly registers" the event ??