I tried some btc address segwit to convert into ethereum address. Then its noted no private key on the network? At first I thought its possible but thinking about it. How can this be possible having two different blockchain?

Also I found it suspicious that we can come up with an ethereum address using a private key of bitcoin? You mean we need to input our keys to do? No way, its like a a suicide when you copy a bitcoin private key to an unknown website.

Inputting a PK is a risk for everyone. Not a good way to acquire an ethereum or btc address from this. Might just create a new one from trusted mew, or bitcoin core wallet