Pour both bottles of wine and the apple cider into a 6-quart slow cooker.
Stir in the honey until it dissolves. Doing this while the liquid is still cold keeps it from sinking into a layer at the bottom.
Add the orange rounds, orange peel strips, cinnamon sticks, cloves, star anise, ginger, and salt.
Cover and cook on LOW for 2 hours. Do not use HIGH — the wine will reach a simmer, drive off its alcohol, and take on a cooked, jammy flavor.
Lift the lid at the 90-minute mark and taste. If the wine was on the tart side, add another tablespoon of honey.
Remove the orange rounds after 2 hours. Left in longer, the pith turns the whole pot bitter. The peel strips, cinnamon, cloves, and star anise can stay.
Turn the cooker to WARM and stir in the brandy off the boil. Taste once more and add the lemon juice only if the punch reads flat.
Ladle into heatproof mugs and garnish each with an orange half-moon and a cinnamon stick.