Can a Single Options Trade Be Executed across Both an RFQ Platform and a CLOB Simultaneously?

Typically, a single trade is not executed across both simultaneously, as they are distinct execution venues with different protocols. However, a trader may use a 'smart order router' or an execution algorithm to split a large order, executing a portion on the CLOB for price efficiency and the remainder via an RFQ to secure a large block fill or better pricing for the residual size.