‘Both’ means both. Not ‘either.’
Black’s Law 68 – Black’s Law Dictionary, the leading legal lexicographer, 1968, “Black's Law Dictionary: Definitions of the Terms and Phrases of American and English Jurisprudence, Ancient and Modern,” https://www.latestlaws.com/wp-content/uploads/2015/04/Blacks-Law-Dictionery.pdf
BOTH. The one and the other; the two without the exception of either. Lower Indian Creek Drainage and Levee Dist. of Cass County v. Vallery, 343 Ill. 49, 174 N.E. 842, 843. All of two, United States v. Bachman, D.C.Pa., 246 F. 1009, 1011. The term likewise has a meaning which excludes more than two mentioned subject matters. In re Turner's Estate, 171 Misc. 78, 11 N.Y. S.2d 800, 802. "Either," may mean "both." Kibler v. Parker, 191 Ark. 475, 86 S.W.2d 925, 926.