In heat exchanger coils, air flow and tube flow are always and only cross flow.
See next picture.
This is not to be confused with the flow in the transition from one circuit to the other.
The following pictures do not represent either an co-current or counter-current flow. They only identify whether the fluid inlet on the tube side corresponds to the air inlet point in the coil or not.
The fluid flow on the tube side is always cross-flowing with respect to the air, because the fluid flow inside the tube must be taken into account.