If a player forgets to channel runes on their turn, how long do they have to retroactively channel them under the 'full round cycle' rule?

Ruling: If a player forgets to channel runes on their turn, they can retroactively channel them during the next player's turn, but not on their own subsequent turn.

Sequence:

• Player B (second player) forgets to channel runes on their turn
• Player B can still channel the forgotten runes during Player A's next turn
• Player B cannot channel the forgotten runes once their own next turn arrives