BPMN21 — Figure 11-4 description

The first sentence of the paragraph under Figure 11-4 (Conversational
view choreographies) refers to Figure 11-3, but is about Figure 11-4, as
far as I can tell. How is the parent-child relation referred to at the
beginning of the paragraph reflected in the notation or metamodel? It
says the Planned Order Variations as being keyed on Order Id, but the
figure shows it keyed on Variation ID also (compare to description of
Retailer Order and Delivery Variations Ack). The paragraph refers to
Conversations instead of Communication.

The second paragraph under Figure 11-4 refers to Detailed Shipment
Schedule and Delivery Monitor, which aren't in Figure 11-3 or 4. The
paragraph refers to Conversations instead of Communication.

The third paragraph under Figure 11-4 refers to Delivery Planning and
Special Cover, which aren't in Figure 11-3 or 4. It mentions messages
spawning conversations, which isn't described anywhere else. The
paragraph refers to Conversations instead of Communication.