This is a composite, illustrative example, not a single named individual's account.
Two solo agers who met at a senior center hobby group realized they were each independently worried about the same "what if no one notices" fear. They agreed to a simple, explicit daily check-in and named each other as a secondary emergency contact, each documented in their own paperwork.
The lesson: pairing with another solo ager works well because the arrangement is naturally reciprocal from the start.