Simplifies the connect operations. #536

Job	Run time
CMake msvc-14.2 Debug C++17	8m 48s
CMake gcc-11 17 Debug	9m 8s
CMake msvc-14.2 Release C++17	10m 12s
B2 msvc-14.2	7m 19s
B2 gcc-11	5m 6s
CMake gcc-11 20 Release	11m 34s
CMake msvc-14.3 Debug C++20	7m 45s
B2 msvc-14.3	8m 26s
B2 clang-14	5m 44s
CMake clang-11 17 Debug	6m 25s
CMake msvc-14.3 Release C++20	7m 14s
CMake clang-11 20 Debug	6m 43s
CMake clang-13 17 Release	8m 57s
CMake clang-13 20 Release	9m 42s
CMake clang-14 17 Debug -stdlib=libc++	8m 5s
CMake clang-14 20 Release -stdlib=libc++	12m 5s
	2h 13m 13s

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