Complex sentence: On March 14th, 2016 the couple posted a special announcement to their Snapchat channel "thenoonans", which featured a short video displaying Amy and Nick's left hands, each bearing a wedding ring.
Split into simpler sentences: On March 14th, 2016 the couple posted a special announcement via their Snapchat channel "thenoonans". The short video featured Amy and Nick's left hands, each bearing a wedding ring.