Yes I agree the shard bonus is included for the link bonus, but I do not think the benefit also extends to the other player that the trick was linked too. The card says " You receive", but does not say "All receive".
Ah, of course. I agree.
As a follow up question, does this card also count to receive a bonus when each trick is performed during the performance phase? Since the card is just an "Interlude" then I guess that it would not.
Special Assignment cards always have an action icon on them, showing which action they apply to. I assume the icon on the Orchestral Interlude card is the "Set up trick" icon? If so, it does not apply during the performance.