Complex sentence: At the end of 1686 the Ottomans made peace overtures, however the Imperial Habsburgs now saw a chance to occupy and conquer the whole of Hungary and these peace feelers were rejected.
Split into simpler sentences: At the end of 1686 the Ottomans made peace overtures. However, now, the Imperial Habsburgs saw the chance to occupy and conquer the whole of Hungary and these peace feelers were rejected.