Preconnects to res.cloudinary.com, sets image URL after short delay and then grabs resource timing entries for image

secureConnectionStart is set to zero, but timings for other phases of connection establishment are clamped to fetchStart

Chrome: When DevTools are open with caching disabled, secureConnectionStart also appears to be clamped to fetchStart and when DevTools is subsequently closed several reloaded before returning to zero

Safari: secureConnectionStart remains zero when Inspector is open

Edge (Chromium): Behaviour seems to match Chrome