This is what I got today while navigationg agoda.com
Here you can see same content but different presentation. Does this help user?
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It is considered best practice to keep navigation and other similar elements consistent throughout a site. Consistent navigation helps the user know where they are within the site at a glance and navigate with ease. Moving links and changing icons causes confusion. It's possible that particular site could be rolling out a new design or performing some sort of A/B testing, but it is definitely not best practice to change your navigation that much within one site.
For more reading, see #8 here: https://www.nngroup.com/articles/top-10-ia-mistakes/ and also: http://www.uxbooth.com/articles/the-rules-for-modern-navigation/