Two CommunicationEvents created per order

First one at https://github.com/tangentlabs/django-oscar/blob/aea2758eeb3b7cab91c8ec9608fa720c7a67a4e1/oscar/apps/checkout/mixins.py#L290 which then calls dispatch_order_messages which creates another one at https://github.com/tangentlabs/django-oscar/blob/aea2758eeb3b7cab91c8ec9608fa720c7a67a4e1/oscar/apps/customer/utils.py#L47.