It suggests there is some benefit to be obtained. To put that person in a better position than someone else.

Hello! The phrase "cozy up" can have different connotations depending on the context in which it is used. Generally, it means to get close to someone or something in a friendly or intimate way. It can also have a negative connotation if it is used in a manipulative way, implying that someone is getting close to someone else for personal gain or benefit. However, this is not always the case and the phrase can also be used in a neutral or positive way. So, "cozy up" can mean just getting close to someone or something in order to relax and enjoy their company, or it can mean getting close to someone for personal gain. It all depends on the context in which it is used. I hope that helps!

It only means moving up close to someone in a comfortable way. It says nothing about the reasons for moving up close. Any interpretation beyond that must come from context.

Here are some example sentences with cosy up: After a long day at work, all Sarah wanted to do was cosy up on the couch with a good book and a warm blanket. The newly adopted kitten cosied up to its owner, purring softly as it snuggled against her. As the temperature dropped, the family gathered around the fireplace to cosy up and enjoy some hot chocolate together. In an effort to secure a promotion, Tom tried to cosy up to his boss by praising her ideas and offering to help with her projects. You can see that it is cosy up to which has the meaning of getting some benefit, and even then, it is not always the case.