Query regarding GraphSAGE ( 2Layers, 2 hops) Concatenation

[TejaswiniKatale]

I had a query regarding 2 hop, in first hop if I take 5 neighbors each of size [134], so mean will be [134] then the result for lets say node 0 after concatenation will be [168], and multiply by weight matrix [6816] to reduce its dimension to [116], so now when I apply 2nd hop of 3 neighbors for each of 5 neighbors (1st ones), so now the mean of each node will be [116] and should I again concatenate it to the first level neighbor [132]? and then apply again weight matrix of [32 4] as I want 4 classes at last so output will be [14], but I am confused whether concatenation happens at hop 2 also?? or just aggregation and it will remain [116] itself