New answers tagged tabs
Your best bet is that iCloud can only show one device at a time. What you could try to do, however, is link the two iOS devices together via Bluetooth. That might sync the tabs between the two and list both of their tabs. If not, than iCloud is a one-at-a-time thing.
In OSX Terminal, hold down the keys ⌘+Shift while arrowing right or left. This will allow you to switch between active tabs. When on the tab you wish to close, as you noted, ⌘+w will close that tab.
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