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Yes, that is what is happening. Google will often use the title that is on the page, but it does not always do that. It will use a different title if it thinks a different title is more relevant to the searcher's intent. This is especially true if the content on the page does not match the title. (For example, on the Elexio page, the words "Church Management Software" are not even present on the page, other than the title, description, and schema.)