@Mazda616 I'm still confused by this. Why would an outside, third party recruiter, be vetting internal candidates for the internal hiring manager? And why, if you know the hiring manager and have been at the company for as long as you have, can't you just fire off an email stating you are interested in their open position?
What type of business are you in? Maybe this is how it works out there in the real world and I'm just not familiar?
Does your current manager know you are applying for other positions? Or is that not part of the process? I would think, in a rational place of business, you, a long term employee, would be able (and encouraged) to speak to management about career goals and such and if that included moving to a different department within the company, they should be delighted. They know exactly what they are getting and how much it will cost before you even speak.