The odds of two unrelated pieces of hardware
falling to the deck
at the same time are too great to assume that this would be the case.
Just some WAGS: (wild-ass guesses)
Raise and lower the main, unfurl and furl the jib
, check the lazy jacks, grab and shake the standing rigging
, check the messengers and spare blocks, turn the lights on and check, check wind vane
, check equipment
that may have a mast
mounted antennae, radar
mount, spreaders, radar
BTW and just a consideration; I once saw a seagull drop a hard metallic item on my neighbor's deck
Let us know what you discover.
Here's hoping whatever it is, is cheap
and easy to fix!