Field lines from simulation RR7 at ﹩\mathstrut{\cal T} =4﹩ and for a nonuniform Lunquist number with a maximum of 57,600. This simulation shows three separate reconnection interactions: the tubes first slingshot by (d), then tunnel by (e), and finally merge together by (f). The panels shown here are at times ﹩tv_{\mathrm{A}\,}/ R=[ 0,\ 7,\ 25,\ 40,\ 78,\ 202] ﹩.