I have been having long discussions with Grok about genomic studies, and as such, it is familiar with the meat of this topic. The essential agreement between the AI and me is that only two periods of extreme evolutionary leaps are in the available data.
1. ~2,000,000 years ago, with the emergence of Homo erectus.
2. ~800,000 years ago, with the emergence of the ancestral population living just before the divergence of Neanderthals, Denisovans and our own modern human lineage.
These two events fit with the source material that our project is investigating. The information recovered from the Churinga artefact (Sentinel Probe) stated that one NHI group created humans (H. erectus) and, much later, a second NHI group engineered our Homo sapiens ancestors. Additional information and evidence centre this second intervention at ~788,000 years ago.