Assuming there are two pairs xyz/abc and wrs/abc and both gives signal concurrently with the first one signaling a buy on abc and the second one signaling a sell on abc. How to place orders for abc because both pairs are using the same abc but signaling order on oppposite direction concurrently. The broker would not let a trader buy and sell abc concurrently. Would ignoring the abc trade and taking signals on xzy and wrs have the same trade return mathematically compared to taking abc trades for both? What about xyz/abc signals a buy on abc today and the trader brought abc and tomorrow wrs/abc signals a sell on abc with xyz/abc trade not close yet? Should a trader close the abc trade assuming that both trades have same position units trading.