A company with an internal sales department and an outsourced marketing, do you think this is wrong?

If the cost economics so desires then there would be nothing wrong as long as the activities are aligned and tuned up to meet the goal.

No, I don’t thing so – the challenge is ensure the team acts as one and not as independent departments.  Some businesses are only a handful of actual full time employees topped up with many external consultants and teams.

Teams should meet frequently through sales seminars etc. And Managers should communicate successes and future focal points through newsletters and social media etc.