Boat with two passengers cannot teleport to where the latter at by using function/command block with looping.

As my imagination, this function would teleport the boat far away from player. The function works, but the boat only teleport once as if the function didn't work perfectly.
Here is the function.

execute @e[tag=back] ~ ~ ~ summon minecraft:armor_stand ~ ~ ~

{Tags:["temp"]}

tp @e[tag=temp] @e[tag=back]
tp @e[tag=l] @e[tag=temp]
kill @e[tag=temp]
(repeat more than once)

I want to do like this
link title
But I want to complete in one tick.