Since it's a RWBY fanfiction, 'a silent connection' could imply a connection that defies the norm in the RWBY world. It could tell the story of a character who is usually an outcast, like a Faunus with a very rare ability, and how they form a silent connection with a more popular character. This connection could be the key to overcoming some great danger in the story, like a new type of Grimm that can't be defeated by normal means. The fanfiction might delve deep into the emotions and unspoken understandings that these characters develop as they face challenges together.
Another option is to check out RWBY - centered forums or communities. Some of them have sections dedicated to fanfiction sharing. Members might be able to direct you to where you can find 'a silent connection rwby fanfiction' or may even have it available for sharing within the community.
One idea could be exploring the backstory of how the Silent Knight came to be. Maybe he was once an ordinary Huntsman who faced a great tragedy that led him to his silent and brooding state.
It could be a powerful and corrupted Huntsman. He might have once been a colleague of the Silent Knight but was consumed by greed for power. He now uses his skills to create chaos and try to take over the kingdoms, and the Silent Knight has to stop him.
I think a silent manga might explore the theme of suicide in a deep and introspective way, but it depends on the creator's intent and the story's context.
I haven't read this specific 'broken and silent gems rwby fanfic' in detail. But generally, RWBY fanfics often explore the characters and the world of RWBY in different ways. Maybe this one focuses on the idea of 'broken and silent gems' which could be a metaphor for characters who are damaged or quiet in the RWBY universe.
The silent temptation could be a hidden force that brings out or tests the true love. Maybe it's a challenge that makes the love stronger or reveals its true nature.
There might not be a direct connection. 'A Christmas Story' is a story and 'Silent Night' is a Christmas carol. But they both relate to the Christmas theme.