Complex sentence: This design enables adding several chained intermediate drivers between the miniport and protocol drivers, however, driver vendors must be careful and not assume that the traffic they send out to the next interface is implemented by the last driver in the chain.
Split into simpler sentences: This design enables adding several chained intermediate drivers between the miniport and protocol drivers. Therefore, driver vendors must be careful and not assume that the traffic they send out to the next interface is implemented by the last driver in the chain.