It depends upon the object. Technically speaking, if it's on a web page and can be interacted with, it can be recognized. So, what you've described is an odd case. If you can give us more details as to what you're attempting to do (screenshots of the componet, of TestComplete Object Browser, etc) we can help you get it to work.
The object you want to get to specifically isn't an object it's part of the text of an object. That entire panel (loginInfo) has it's own contentText that includes User: tmatador. You can grab the content text and strip out just the username with some regex if that's what you need.
Additionally, your Object Browser is in simple mode (ss2.png) and you may switch it to the advanced mode to see more properties.