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