Does Blocking Site Notifications in Opera Also Block Service Worker Push Messages?

Goal

Determine whether a site‑specific notification block in Opera suppresses push notifications delivered through service workers.

Context

Opera’s Site Settings panel allows a user to set a site’s notification permission to Block. The UI does not distinguish between standard banner alerts and push messages sent via service workers. Clearing site data does not remove the block flag, indicating a persistent setting. The behavior of this block with respect to push notifications remains undocumented.

Unresolved Decision

When a site’s notification permission is set to Block, does Opera also prevent the site’s service worker from delivering push notifications? If the block is persistent, does it apply to all future push attempts, even after the site’s data has been cleared?

Specific Questions

1. Will a Block permission on a domain suppress push notifications sent via service workers?
2. Does clearing site data remove the block flag for push notifications, or does the permission persist independently?
3. Is there a separate setting or API that can differentiate between standard notifications and push notifications within Opera?