Yes and no. I'm from waqoyi and I literally can't understand Southern somaliu dialect. We also have different dishes to the konfur guys. You guys have much more variety I've seen southern somali it looks so different to any thing I've seen. Also somalis are very qabilistic. Some somali familys would rather there kids marry from ajnabis than certain somali clans. So yes we are different not exactly the same
The difference between a Southern Somali and Northern is like a Newcastle vs London accent. Yet due to tribalism Somalis will make it sound more different than it really is. Reer Xamar cad cads I would say are the ones people struggle with the most. They are not representatives of all Southern Somalis.
Furthermore with regards to food, we have more variety. But everything you eat we eat which is the base Somali standard food. Most Northerners now eat Malawax ect now anyway.