Can you Merge 2 Google Accounts into 1? What about YouTube? What exactly is a "Google Account"? Do you see it the way Google sees it? How can you get Help from Google? Can you log into Multiple Google Accounts simultaneously?
"Can I Merge Two YouTube Channels into One?" The answer is "NO".
It is very helpful to have a deeper understanding of how Google sees your YouTube Channel, your Gmail Address, your Google+ Page, your Picasa Account, your Google Apps, and your many other Google Products.
In addition, knowing how to Search Google Help is imperative. WHO is answering your question? How OLD is the answer?
In the Video, Fred answers the Question (can I combine 2 Accounts?), and then explains what a Google Account is, from Google's perspective.
A brief demonstration of Google Help follows, with a quick wrap-up of Signing into Multiple Google Products (you cannot be signed into 2 YouTube Channels at the same time).
Be sure to Heed the Warning about Not Attaching a YouTube Channel for your Company, Business, Service or Product to your personal Gmail Address.