How can Lord Vishnu take Ram avatar and Parushuram avatar at the same time?

How can Lord Vishnu take Ram avatar and Parushuram avatar at the same time? Bhagavan Vishnu is all powerful. He is always everywhere. So what's suprising if he has two avatars at same time ? The eternal God is Omnipresent. Narayana Suktam - Whatsoever is seen or heard in this world, Narayana pervades and exists in all of them, which are both inside and outside. Narayana Suktam, Taittiriya Aranyaka , Krishna Yajurveda. 2. Valmiki Ramayana - You appear in all created beings in the cattle and in brahmanas. You exist in all quarters, in the sky, in mountains and in rivers. Chapter 117, Yuddha kanda, Valmiki Ramayana. 3. Harivamsa - Thus creating the entire universe, you pervade all of the universe. Pervading all these worlds, O keshava! you stay everywhere. Hence you have the name Vishnu, since you are seen to pervade all in the form of elements. Chapter 88, Bhavishya Parva, Harivamsa. 4. Vishnu Purana - You are everything, the beginning and the protector of the world. All beings exist in you. You are all that has existed and all that will exist. You are more subtle than the subtlest. You alone are Spirit, which stands apart from primal Nature.