It's not uncommon to leave a company A go work for company B and a few years later go work for company C hired by a former colleague you met at company A, who p

It's not uncommon to leave a company A go work for company B and a few years later go work for company C hired by a former colleague you met at company A, who perhaps now has some important role there. That's favourable for both parts. Your former colleague that hires you knows you and your qualities. And it's also good for you because you have some edge in the negotiations because you know you have a strong sponsor. There is always an upside of being a good colleague with the largest amount of people. That increases the chances you're finding yourself in this favourable networking situation. And it also makes life better for everybody involved when it doesnt