It seems that if the Spanish and Majapahit would have same interests in driving the Bruneians away because in the case of Majapahit the Bruneians seem to be a threat to their japanese trade on Northern Luzon, while the Spanish would want to have trade in Manila bay with the Spanish, I am thinking of the Spanish having Southern Luzon which was under the Bruneians while Majapahit having Northern Luzon which are loyal to Majapahit with trade concessions to the Spanish like allowing the Spanish to sail on the seas of Majapahit in Northern Luzon to contact the Chinese.