The scenario you describe, where another inflationary universe is triggered within our existing universe, is an interesting speculative concept. However, it is important to note that our current understanding of the universe, including inflationary models, has limitations, and there are many open questions in cosmology.
Inflation is a theoretical concept that proposes a rapid expansion of the universe in its early stages. According to current models, inflation is thought to have occurred in a specific region of space, leading to the observable universe as we know it. However, the possibility of another inflationary event occurring within our universe is not well-established or supported by evidence at present.
It's also worth noting that the universe operates under physical laws, and the occurrence of another inflationary event would depend on the specific conditions and mechanisms involved. While it is theoretically possible for different regions of space to undergo separate inflationary events, the exact details and consequences of such events would depend on the specific physics involved, which are still areas of active research.
Additionally, the concept of one universe "destroying" another or "overriding" it is not well-defined in the context of our current understanding of the universe. The interactions between multiple universes, if they exist, would depend on the specific nature of these universes and any potential mechanisms governing their interactions, which are highly speculative and still under investigation.
In summary, the scenario you describe is an intriguing concept, but it falls within the realm of speculation and hypothetical scenarios at present. Our understanding of the universe and its possible interactions with other universes is still evolving, and further scientific research is needed to provide more definitive answers.