Aspects of the present disclosure relate to spool assembly implementations and related methods for fluidly connecting wellheads. In one implementation, a spool assembly for fluidly connecting wellheads includes a first end flange, a second end flange, and one or more pivotable connections positioned between the first end flange and the second end flange. Each respective pivotable connection of the one or more pivotable connections includes a connection tubular having an outer spherical surface, and a bearing tubular having a spherical end disposed about the outer spherical surface of the connection tubular. Each respective pivotable connection of the one or more pivotable connections includes a socket flange tubular disposed about the spherical end of the bearing tubular, and a shoulder flange tubular disposed about an outer shoulder of the connection tubular. The shoulder flange tubular is coupled to the socket flange tubular.