Mutual sabotage in parasites

Some parasites have only one goal: to develop completely in their intermediate host, await the right time to infect their definitive host and procreate there. Many parasites manipulate their intermediate host's behaviour. This causes the host to act differently and, depending on the parasite's requirements, be more or less evident to its natural predator. But what happens when parasites in different developmental stages or even different species of parasites with contradictory goals infect the s