Is it possible to bind a single WFDSource to multiple pipelines simultaneously?

The use case I'm thinking of is splitting a single desktop across two displays/monitors. To easily be able to drag windows between monitors, there would be a single source image large enough to cover both bits of display hardware. This source image would then be connected to two pipelines, one for each port (with one monitor connected to each port). Each of those pipelines would have a different WFD_PIPELINE_SOURCE_RECTANGLE.

This is all obvious how to do from the OpenWF Display specification. However, I can't seem to find any reference in the spec which says you can bind a single WFDSource to multiple pipelines simultaneously. It's also not a requirement for the above use case: Instead of creating a single WFDSource, you could create two WFDSources from the same EGLImage or even create two sibling EGLImages and create a WFDSource out of each.

Any clarification (or RTFM referencing part of the spec I've missed ) would be greatly appreciated.