The answer
Potentially yes. If an app queries multiple addresses through one provider, the provider can correlate the queries, IP or account identifiers even when the blockchain itself does not group them.
What to do next
Use a trusted RPC endpoint or your own node if feasible, and review wallet connection and telemetry settings.
Ethereum privacy overview
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BitBox Bitcoin hardware wallet
A Bitcoin self-custody device to compare; it does not make on-chain transactions anonymous or prevent address linking.
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Frequently asked questions
Does using a self-hosted node erase existing chain analysis?
No. It limits some new data disclosure, not historical public blockchain links.