It looks like you posted a PNG. If you drop the SVG into a ZIP and attach it here, I’d be willing to bet that someone will fix it for you and tell you how they did it.
The segmentation produced from Fusion 360 depends on a bunch of factors. One conversion flow is Drawing -> DXF -> Inkscape -> SVG. Which, does need some node joining afterward, I’ve found.
- Ungroup the imported DXF object. (right click, ungroup)
- Select all the lines and combine them into one object if they aren’t already. (Path->Combine)
- Choose the “Node editing tool”. On my toolbar it’s the one next to the regular selection tool. Rubber band around all the nodes at once and choose “Join selected nodes” (Shift-J), it’s also a button the toolbar that looks like two nodes going into one on a segment.
That join operation might be too aggressive and join nodes that are too far apart. If it does that you’ll see some of the paths go wonky. If so, click Undo and do smaller selections (worst case, pair by pair )