Forum:Supervise + syncro timing issue

i synchro summon a "blackrose dragon" using a "gigaplant" equipped with "supervise" and a "spore" (or any lv 1 tuner). when "gigaplant" is sent to the dumpster for the synchro summon, is "supervise" considered to be sent there simultaneous with "gigaplant", and will this (effect of "supervise") become chain link 1, should i choose to activate its field destroying effect ("blackrose dragon") upon its successful synchro summon? when an equip spell card such as "supervise" no longer has a monster to attach itself to when that monster is removed from the field, does it (equip spell) "wait" until it no longer detects a monster and then sends (destroy??..) itself from the field automatically due to game mechanics? (im assuming it is) my friend and i got into a heated argument about this and i would appreciate some clarification, if possible. also, does a monster put into the rfp zone by way of "gold sarcophagus" "remember" how it was put there even after being taken out via "escape from dark dimension" or the like, or is its link with "gold sarcophagus" severed when removed from the rfp zone and later returned?