in addition to Dipscom answer , if I understand correctly ; pls try this :
var tl = new TimelineMax({ repeat:-1, yoyo:true, repeatDelay:1 })
.from(["#path1","#path2"], 1, {drawSVG:"0%", ease:Power2.easeInOut})
.to(["#path1","#path2"], 1, {drawSVG:"100% 100%", ease:Power2.easeInOut})