Why are the two gates handled separately?

The left counter visibly falls from 154 to zero while the right stays at 148; opening both routes together overloads the five-hole buffer.

What remains after the right gate is gone?

The separated rainbow sides, dark outline, red suit, blue/cyan pieces and green ground still need their matching routes before the empty-board cue.

Colony Flow! level guide

hard 8 colors

Finish the left 154 gate with cyan traffic before opening the right 148 gate, then clear the rainbow, space-suited figure and green ground.

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Tap the two cyan 45 stacks for the left gate and wait for the cyan ants to begin returning before opening another color.
Add orange 45 and red 26 as the left counter drops from 154 toward 133; keep the right 148 gate closed.
Use the revealed cyan 16/25 and orange 19/12/6/1 groups, waiting for the left counter to pass 59, 30 and 9.
Route blue/cyan 17/11/6 and green 12/5 only after the short orange cards clear; finish the left counter at 2 and then zero.
When the right gate begins moving from 148 to 113, send dark purple 30/35/34 and the long cyan/blue 45/20 routes one at a time.
Continue with green 45/41 and red 21 while the central helmet and red suit open; do not fill all five holes before the right counter reaches 44.
At the 44-to-14 phase, use red 6/2 and white 2/6 to clear the lower suit and right-side gate fragments.
After the right gate disappears, route blue 30/20/15 and cyan 45 pieces through the separated lower figure and sky fragments.
Clear green 43/41/25 and the short red 22/7 cards while the board reduces to the two red arch sides, dark outline and small cyan pieces.
Finish the red and dark-purple arch fragments, the last blue/cyan pixels and the green ground patches, then wait for the empty-board clear.

Colors in this level:

Red, Orange, Yellow, Green, Cyan, Blue, White, Dark purple

Opening the right-gate dark or red cards before the left 154 counter reaches zero fills the holes and stalls the cyan release.
Stopping when the right counter disappears leaves the rainbow sides, blue lower pixels and green ground fragments uncleared.

Board notes 5 details

Layout: A red-and-blue space-suited figure stands beneath a rainbow arch with pale-cyan sky, red sides, dark outlines and green ground. Brown gates start at 154 on the left and 148 on the right. Five white holes are empty; visible reserve cards include orange 45, cyan 45, red 26, another cyan 45, dark purple 30, pale-cyan 47 and green 45/45 groups.
Goal: Use the cyan route to empty the left gate, then release the right gate and remove the rainbow, helmet, red suit, blue boots, cyan sky and green ground until the board is empty.
Opening: Use the two cyan 45 stacks for the left 154 gate first. After their convoy returns, feed orange 45 and red 26; leave the right 148 gate untouched while the left counter is still falling.
Danger Zone: Opening dark-purple, red or green cards for the right gate while the left cyan convoy occupies the five holes stalls the left counter near 30/9 and hides the short orange 19/11/6 cards needed for release.
Mechanics: An asymmetric dual-gate, limited-buffer board: the left counter falls from 154 to zero first, then the right counter resumes from 148 through 113, 44 and 14 before the separated rainbow and figure fragments clear.

Why are the two gates handled separately?
The left counter visibly falls from 154 to zero while the right stays at 148; opening both routes together overloads the five-hole buffer.
What remains after the right gate is gone?
The separated rainbow sides, dark outline, red suit, blue/cyan pieces and green ground still need their matching routes before the empty-board cue.