Protect the checking rook with your bishop.
A rook gives check with a bishop supporting it. The king cannot take the rook if the bishop protects its square. The king’s other escapes must also be blocked or controlled.
Bring the rook into the king attack
Your rook comes up so it can swing to the h-file. In this line, the queen sacrifice draws out the king, then the rook checks while your bishop supports the final capture.
2 more clean runs (at any point) to reach Recall.