Features are disclosed for transferring speech recognition workloads between pooled execution resources. An outlet of a fluid delivery device is engaged with an aperture in the substrate from the opposite side of the substrate from the surface to which the film is attached. A plurality of balls are arranged in clearances between the first and second projections and the third and fourth projections. After receiving the NCF, the receiver waits for a timeout period and resends the NAK if no repair data is received.