Bent Combining Functions Bent functions are boolean functions with maximum nonlinearity and are widely studied for their potential applications in cryptography. Lets say you wanted to use a simple two input AND gate as a nonlinear combiner for the outputs of two Linear Feedback Shift Registers . Because a two input AND gate is a bent function, is it technically correct to call the output sequence of this combination generator a bent sequence ( I need to know this for a paper I am writing).Thank you for commenting.
No.  As far as I can tell, this does not appear to produce a bent sequence.  (Or, if it does, that fact requires proof/justification.)

According to Wikipedia, a "bent sequence" is a sequence of the form $(-1)^{f(x_0)}, \dots, (-1)^{f(x_{2^n-1})}$ where $x_0,\dots,x_{2^n-1}$ is the sequence of $n$-bit values in lexicographic order and $f$ is some bent function.  That's different from what you are mentioning.  If what you're mentioning happens to fit this definition, that fact is far from obvious.

I don't know if this is the same definition of "bent sequence" you are using.  If it isn't, I suggest editing your question to include the definition you are using.