A method and apparatus are provided for implementing electrical connection of two large circuit cards through multiple discrete land grid array (LGA) sites. Each of the circuit cards includes a plurality of LGA sites. A first circuit card includes a plurality of LGA interposers locally aligned at the respective LGA sites of the first circuit card. A board-to-board connection hardware assembly connecting a second circuit card to the first circuit card includes a elongated carrier defining a cavity receiving a plurality of load springs coupled to an associated bearing block for loading and maintaining flatness of the LGA sites.