summon wandering_trader ~ ~ ~
data modify entity @e[type=minecraft:wandering_trader,limit=1,sort=nearest] DespawnDelay set value 48000
summon trader_llama ~ ~ ~
summon trader_llama ~ ~ ~
execute as @e[type=minecraft:trader_llama,limit=2,sort=nearest] run data modify entity @s DespawnDelay set value 48000
execute as @e[type=minecraft:trader_llama,limit=2,sort=nearest] run data modify entity @s Leash.UUID set from entity @e[type=minecraft:wandering_trader,limit=1] UUID