hey,
it is quite some time back when i had my mind deep in that stuff. it’s basically rephrasing the according bogleheads articles.
hm, backup, good point 
ill make one.
as dividends vary over the years, you can play around, this is no precise information, only guesswork.
assuming tthe DA-1 works (i never did it but there is no reason that it should not): yes, the 15% L2WT would be credited for overall income taxation, effectively lowering it to zero. this corresponds to 0.3% saving. This represents the optimal way to go in the VT/VWRD topic.
yes, astonishing but true in the low-cost-area of ETFs.
no i don’t know why i left L1TW epty, probably because i was too lazy to calculate it. please, go ahead and read the topic on bogleheads, then you should be able to calculate it & fill it in.
L2TW is zero because as an IE domiciled fund, you as a swiss resident don’t pay any witholding taxes to ireland